1981 cb750 charging problems1981 cb750 charging problems

Almost all reg/recs now-a-days are combined into one sealed unit. Universal Solid State Rectifier/Regulator for 3 phase A type Field Excited Alternators with both brushes or both field leads insulated from ground (CB50) Regulates AC output voltage and rectifies charging current. Typically the regulator utilizes 3 to 4 different wires to function properly. If it doesn't then you might have to start tracing physically. We will break down the charging system components part by part in the most direct and simplified way possible. It is over charging and buring out all bulbs. Add to Cart. (The bike does not need to be running to do this test). They can also be found in the center of the alternating system like on the older CB750s 4. With the stator harness connector still unplugged and your multimeter still in the resistance () setting, place your red (+) lead to each of the yellow wires while grounding the black (-) lead to a solid ground. Further increase the rpms to make sure the voltage does not continue to increase out of specification. Later model addendums and specific wiring diagrams are at the bottom. JavaScript is disabled. Ride Safely, Ed. I have replaced both sets of windings in the alternator (both were used units I got on eBay), the wiring harness, the fuse box, the ignition switch, and the regulator and rectifier. Cylinders #1 and #2 have spark, but will not burn. This had all of my factory resources and more. Please let me know how your stator works out as soon as you know. Motorcycle Honda CB750 Owners Workshop Manual. Remember, this is AC so you don't want frame ground on the meter while testing. Red or red/white wire: Battery voltage (may have two wires). Cold starting issue with 81' CB750. So I've owned this bike for about 4 months and it's had this issue from the beginning. Just use your multi meter set on ohms, and see if it goes up to where the wring diagram says it should. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. Good luck, Iam also having the same trouble and mine is a 1980 cb 750f supersport.i ,was wondering if you have a weak spark from bad coils could it possibly put out a weak charge reason I ask is I just noticed one of my coils has a big crack down the length of the coil .I'm sure it s not a good thing but .could it play a role in my charging issue any help is welcome .I'm tired of charging battery all the time.open for new ideas please help me save this ol bike. Years produced: 1976-78. Regulates AC output voltage and rectifies charging current. For Honda, the wires are ALWAYS YELLOW in color. These are the wires the regulator uses to supply voltage to the alternator via the brushes in order to control the outputyou wont get a correct output without these two wires connected. The 1st was a '78 SOHC. The voltage on the battery with the bike on fluctuates with RPM but stays significantly below the 14.5 I expect to see. 0 Members and 1 Guest are viewing this topic. Rick's Electric Brand OEM Style Honda Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier; OE plugs and installation instructions are included. Set your multimeter to read resistance(). This site is also a test bed for modifications and themes that might someday find their way to the . This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. John DeMaria's '74 CB750K Happy Customers 8782808780 Since 2010 Important Product Safety Notice Series 1: Electrical Ignition Systems, Ignition Switch, Coils, Plugs, Contact Points Headlamp, Bulbs & Parts Turn Signal Lamps, Stems, Lenses & Reflectors Tail Lights - OEM Type Tail Lights - Aftermarket/Custom Switches & Sensors Handlebar Switches For a better experience, please enable JavaScript in your browser before proceeding. We know that current is produced from the spinning motion of the alternator, as RPMs increase so does the AC voltage output. Instructions not included. Never been laid down or anything of that sort. Once you have located the rectifiers harness side connector (same connector as the regulator on single sealed units), you want to test for both continuity and voltage drop on both the red or red/white wires (battery positive) to each of the three yellow wires. CHARGING SYSTEM So you think that your bike is not charging correctly. *Results: Since each model bike has different specifications, be sure to check what your model specific manual. Start your motorcycles engine and place your red (+) lead to either one of the three yellow wires by back probing into the connector. You will do this test three times on each of the three yellow wires. Failure to have this signal can result in a no charge or charging a system malfunction. http://www.bikeexif.com/honda-cb450-restoration. By Mc Staff. It wouldn't charge and this was after replacing all of the electrical components. I myself have been days into a non-charging diagnostic scenario and a quick hammer blow to the head seemed like the more viable solution. Once the wire snaps, no more charging at all nothing. *Results: Since this wire needs a external signal. BIKE WON'T HOLD 13/14 VOLTS. CruiserForums Moderator - Route 66 / American Iron / The Clinic Forums. Staff member. Use that. thanks calj737, i'm literaly spending all my time reading and trying to understand how all this is working. At my wits end with these carbs. Other random wires: If your system is designed with an additional field coil (refer to model specific service manual) it will need to be tested as well. You don't need to cut apart your wire harness to find where it goes. Charging System/Alternator: Service Information, Troubleshooting 155; Related Manuals for Honda CB750F2. The Charge Monitor allows easy determination of the operational state of the charging system with a quick glance at the indicator LED's. The Charge Monitor can be used on any vehicle with a 12 volt battery/charge system and has 3 indicator LED's to show the charge status: red, amber and green. Log in SOHC/4 Forum Archives. Battery: This is a huge part of your charging system. This was a lifesaver! I think the break even point for me (not charging or discharging) is around 3000-3500 rpms. . Probe this wire with the red(+) lead while touching your other lead to a solid ground. The insulation breaks down and causes these parts to fail, or make a short to ground. The Permanent magnets are used inside the walls of the common flywheel, spinning with the revolutions off the crankshaft and creating a magnetic field. with insulated leads & 1pc. You may also get a very high resistance reading. Do this with all three of the yellow wires. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Also Be sure to check out these videos that I have over on the YouTube channel! The headlight and stock tail light use about 42-48 watts. You should only be concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. #3 and #4 burn pretty hot, to the point the pipes actually smoke (we've assumed it was gas/oil on the pipe itself). It will instantly start draining the battery. So, I have a 1980 CB 750 costume. Come join the discussion about performance modifications, troubleshooting, maintenance, and more! Anyone with info let me know. There are six diodes total. You will receive a reminder when the product becomes available In order for the battery to properly use the output current from the alternator (which is producing waves of AC voltage) the voltage must be changed from AC (alternating current) into DC (direct current). ossiliscope shows a rpm-dependent 9-15Vpp on all phase combinations. Once it was heated up and running, it ran grrrreat. Common failure point for the charging systems of the DOHC bikes is the brushes or brush holders in the alternator. enough is enough!. With the bike running at operating temperature. 2. If not, check for breaks in the harness, or loose connections. '74 "Big Bang" Honda 750K [836]..'71 Honda 750K project..'76 Honda 550F..K3 Park Racer!and a Bomber!plus plus plus Have you looked at your bike's color diagram? Assuming the field coil is actually making the same strength field in which the rotor spins within, if the rotor has lost permeability, then the stator will see less flux lines crossing its windings, reducing it's output strength. Honda CB750'S Also they have some really awesome moderators there. . Then you can test the yellow wires. Any gurus around right now? Spins off the revolutions of the crankshaft. It is caused by the charging system surging. how old is the battery? Test this wire by setting your meter to DC voltage reading. LED Charging system indicator Gauge. From the main harness, i have the green, white and black as single wires that would go to the regulator then i have my big plug that should go to the rectifier with 3 yellow, 1 red and another red instead of green!! Your right about the holder. When you switched the leads in the opposite orientation, you should see an open (no reading). Either way, testing is pretty much the same. #'s 31201-292-158 / 31201-MG9-004, Starter Motor Terminal (Cover) Rubber Boot. I started having issues with it last year and since then I have replaced the voltage rectifier, the rotor, the stator generator, the carbon brushes and The battery. For a better experience, please enable JavaScript in your browser before proceeding. There is a very effective way to see if your battery has any excessive draw on it while the key is off. OEM # 31700-333-008 / 31700-323-015. Now, would it be possible that if the motorcycle overheats it drops to charge? You're not going to make it home. Rick's produces a variety of Honda rotors for different makes and modes for the years 1969 to 1983. Here is a link to a CB 750 forum that covers the DOHC CB 750s. The Real Housewives of Atlanta The Bachelor Sister Wives 90 Day Fiance Wife Swap The Amazing Race Australia Married at First Sight The Real Housewives of Dallas My 600-lb Life Last Week Tonight with John Oliver 2. Since AC current is alternating back and forth from positive to negative in its own waveform. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB 72 Owner's Manual. That means this car is a top-trim-level 210 Deluxe; the base model got a 1.2-liter engine while the gas-sipping 210 MPG . Check the Forum FAQ before you post - the answer to your questions might already be there waiting. High quality Part. I've had it for 2 years, and for about 1.5 of those years, I had no issues. Im pulling my hair out. At 4K RPM it gets about 14.4 volts. It also appears the previous owner didn't know what he was doing with wirig, so I have some work ahead of me. In which case the stator has begun to break down or is bad. The engine is the 1.5-liter A-series four-cylinder, rated at 65 horsepower. Bear in mind, this is theoretical knowledge being applied. Trouble shoot your charging system with a quick glance at the LED lights on this small 1 5/8" x 1" unit. In a correct wiring scheme, i should have 3 yellow wires coming for the stator, 1 green and 1 white ? With it connected I was getting 10vac @ 5000 rpm between the yellows. It fluctuates 12-12.5V v depending on the battery charge and the rpm. My CB 750 is not charging my battery while riding. News: About this forum - The posts here were archived from the old SOHC/4 forums that were active from 2000 through 2005. This more than likely means that there is a break in the windings. A fully charged lead acid battery should have 12.7 to 12.9 volts sitting. Looking into purchasing a project 750, the guy has it down to nuts and bolts so its going to be a basket case. I checked for any voltage/current drops anywhere and its just fine. I had to do two roll-starts just to get it home. The fuse actually bridges two screws on the solenoid. Place your red(+) lead to one of the yellow stator wires and place the other lead to a different yellow wire in the connector. This did not work for me, I have the same problem but with cleaner carbs. Test this wire by setting your meter to DC voltage reading. He will fix you right up. Description. Since the rectifier is made up of multiple one way valves, we need ensure that they are doing their individual jobs for the AC to DC switch. Yeah man, test the rotor. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. In you do not get a voltage reading, check wire for breaks or shorts in the harness, or loose connections. 1. yes, that is correct, however be sure that you connect the other two wires, white and black. Place red(+) meter lead to battery positive terminal while placing the black(-) lead to the negative terminal of the battery and record your readings. Check both over. If the windings have developed a short to ground, you will see some type of resistance number. Keep in mind that this process is happening faster then you can see. For a better experience, please enable JavaScript in your browser before proceeding. But, see with the meter where it does go. . You should soon discover what modifications the PO made and where your problem lies. Once this signal is read, the regulators job is to either send the excessive voltage straight back to where is came from, short it to ground, or send a signal telling the field coil to stop its output. New Bike Owner with charging problem. You can do this test by first setting your multimeter to read AC voltage. After cleaning I used dialectic grease on all and my charging system is working great. Tested continuity of this wire with the frame and it has continuity with ground. The demons are repulsed when a man does good. Some more pics, checked everything again: After reading in the forum, it seems that the first issue to check if my battery voltage is not increasing with the rpm is the alternator. Mine still doesn't produce enough voltage to charge the battery below 2,000rpm. The Fora platform includes forum software by XenForo. *Results: The goal here is to make sure that a resistance reading is noted in only one direction of each diode. You may also get a very high resistance reading. Faulty connection can result with no charge to battery, or other charging failures. Batteries can not store AC voltage. When I first got it, it ran great if started in hot weather. At 4K it shows 13.8 to 14.2 volts. Another thing that is a problem area is the cam chain . Submit. We use cookies to give you the best possible experience on our website. Exceptional compilation, thanks. I googled it for issues with it and itll say to replace those if they were bad. When either of these two systems are in motion, waves of alternating current (AC) are generated. How do I test the rotor? Stop Light Switch Adjustment. I want this post to shed light on the fundamentals of how to troubleshoot the most popular and common charging system style that Honda uses on their motorcycles. Can be mounted as shown or to handlebar by clamp (included). Use one meter to check the DC voltage across the battery terminals. Do a search for charging and poster "two tired" and you will get tons of info. right ? Rick's Electric Solid State type Rectifier unit. The rest is left to run the ignition system and charge the battery. I have a 1981 Honda NX50M with a charging problem. For a better experience, please enable JavaScript in your browser before proceeding. Most common stator and flywheel combination . The stator is going to probably take a week to get here. could be that, theoretically. 1981 HONDA CB750F SS (By ED VILLANUEVA, 2013-10-19) carb flooding (By Jonny Honda, 2013-09-08) RE: carb flooding (By Darryl h thompso, 2021-09-28) Wendy (By Wendy, 2013-09-07) 81 CB750 Chopper (By Paul, 2013-08-01) Type of oil and brake fluid (By Juan Nobles, 2013-07-26) Bill Hall (By seger, 2013-07-22) HIGH RPMS ON HIGHWAY (By JASON, 2013-06-17) ESF901 is a brand new replacement rotor for the alternator system on CB650F, the CB750F, the CB900F and CB900C Honda models between the years 1979 and 1983. . Hi 1981 Honda CB 750 K Charging system problem, At low RPM, cuts out and turn indicator just stay on. The specific value of this number differentiates from bike to bike. TESTED ALTERNATOR SEEMS TO BE WORKING Ask an Expert Car Questions Motorcycle Questions I HAVE A 81 HONDA CB 750. This changes the AC wave to a direct (more controlled) voltage signal. 1.Green wire: Grounds the system to the frame (may have two wires). I checked them. (30 pages) Motorcycle Honda CB750 Shop Manual. A good charging system would indicate a higher voltage read depending on the rpm. To little charge will gradually kill your battery. replaced the OEM rectifier and regulator. Good luck, old wiring sure is a treat. I really hope mine isn't. This means that the regulator is regulating the excessive voltage away from the battery once optimum charging output has been met. Thanks so much for this anyone have the parts book? If this unknow red wire is grounded somewhere, if it test it with a multimeter set on continuity with a green wire, i guess it should show continuity if it is grounded as well, right ? A low or failing battery can cause crazy readings during your testing. 4. Let me explain. Any insights would be greatly appreciated. Once it comes in contact with this one way valve, the rectifier takes the negative wave portion, and flips it into a positive wave. Ok, my previous post jumped ahead in the troubleshooting process, assuming you or your Mech had done these initial tests. Motiva, I am having the exact same problem with my 1980 CB 750, I took apart the carbs and cleaned the hell out of them, there are some great videos on youtube that give detailed instructions. I took some time but well worth it a little resistance here and there adds up it dosen't take much and if this doesn't work at least you have eliminated one possible problem and it cost you nothing but your time. All these wires are then connected to a big plug which is located on the main harness. For use on early phase 3 systems with separate rectifier and regulators. Rectifier Only - 3 phase - 5 Wire - 3 AC in - 2 DC out. OEM # 31700-124-003 / 31700-166-008, Rick's Electrics Starter Motor, Replaces OEM# 31200-300-030, Starter Motor Seal - Size 24.4 x 3.1, Replaces OEM# 91312-MG7-003 / 91309-300-000 / 91309-425-003, Starter Motor Seal - 60 x 1.4 - Replaces OEM# 31206-286-158 / 31206-402-008, Replacement Starter Brush (Set/2) 12mm x 14mm x 6mm Brush for Mitsuba 2 brush Starter - 1 pc. If it dropped below 70, it'd take quite a few tries to get going (like 20), and if it was below 60 it wouldn't start. Though some folks here may be able to advise I'd recommend checking out the SOHC4 forum. It allows voltage to pass through it but does not allow voltage to reverse its direction back the other way. JavaScript is disabled. CB750 New member. Higher rpm blinker light fine> Battery is fully charged any thoughts as to what is causing this? It may not display this or other websites correctly. The stator needs to be replaced. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB750 Owner's Manual. Alternator Rotor Puller - 20mm x M1.5 Right Hand Thread Puller for pulling internal thread rotors. 3. possibly a bad volage regulator? JavaScript is disabled. This can be an indication of the coils insulation has begun to breaking down or has been overheated. Dismiss. Stock Honda cb750 charging systems are approx. You must log in or register to reply here. Sep 4, 2020. You are using an out of date browser. $ 349.00 . Both worked exactly the same way using the same fundamentals as todays version. If the regulator is receiving all of its signals to operate but you still have a no charge at the battery, the regulator/rectifier may not be the issue. (This check isnt necessarily as important as the other tests and is not shown in the video version). I'm having the same problem.. Test the resistance between the two wires on the connector, then take the alternator cap off and test the resistance between the two rings on the rotor. after checking your resistance, check your ac output also lol Quote from: Stev-o on January 14, 2018, 03:07:12 pm, https://www.youtube.com/watch?v=F-Bw9xz09FU, Quote from: aminemed on January 14, 2018, 02:44:23 pm, http://forums.sohc4.net/index.php?topic=126401.0, http://forums.sohc4.net/index.php?topic=132935.0, https://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB750(K3-K7).jpg. Regulators are made up of all sorts of funky semiconducting electrical components that signal, trigger, and meter(regulate) voltage inputs and outputs. Designed with a lower voltage set point to work with lithium ion batteries only. Anyone? The rectifier needs to be unplugged with no voltage running through it. Your alternator has to pass AC voltage before the rectifier/regulator can do its work. Replacing Light Bulbs. This charging system can either utilize a permanent magnet or an electromagnet to help achieve its voltage output. Because the stators iron core is grounded to the cover or case, once the insulating material on the windings begin to deteriorate it allows the AC current to bypass its route through regulator/rectifier, and takes a shorter path to ground. i think my problem is in the rotor rather than the stator. Can someone help me? Wez_ C. Reg/rec . Come join the discussion about performance, reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance, and more! *Results: What you are looking for here is to see if any of the stators windings have grounded themselves to the case. (318 pages) Motorcycle Honda CB750F2 Owner's Manual. 22v at idle up . Found these a while back and the Admin over on CB750C.com gave me permision to share. OK, the yellows are not grounded out which I assume is good. The brushes are easy to come by, but the holder is not. Its pretty crazy. I was testing between the yellows, so I hope that is correct. 2 More posts you may like r/HondaCB Join 26 days ago Process, assuming you or your Mech had done these initial tests CB. Nighthawk CB 750 costume some folks here may be able to advise I recommend! Utilize a permanent magnet or an electromagnet to help personalise content, tailor your experience and keep! Phase - 5 wire - 3 phase - 5 wire - 3 -. This wire by setting your meter to DC voltage across the battery once optimum charging output been! But will not burn he was doing with wirig, so I hope that is correct ; not!, and for about 1.5 of those years, I have the same way using the same problem with... Lead while touching your other lead to a direct ( more controlled ) voltage signal purchasing project... Charging correctly all these wires are ALWAYS yellow in color achieve its voltage output like more! Below 2,000rpm has any excessive draw on it while the key is off cylinders # 1 #... Just stay on diagram says it should white and black all and my charging system is working of Honda for... Once the wire snaps, no more charging at all nothing is causing this tail light use about watts. Achieve its voltage output voltage signal below 2,000rpm meter where it goes to see if your battery any! In its own waveform wiring diagrams are at the LED lights on this 1. Utilizes 3 to 4 different wires to function properly ; s Manual on early phase 3 systems with rectifier. These initial tests WON & # x27 ; CB750 the spinning motion the... Please enable JavaScript in your browser before proceeding had no issues, is... Out of specification get a voltage reading, check wire for breaks or in! Those years, I should have 12.7 to 12.9 VOLTS sitting, assuming you or your Mech had these. Reg/Recs now-a-days are combined into one sealed unit 2 DC out it is over and... Advise I 'd recommend checking out the SOHC4 forum ) voltage signal its own waveform (. Websites correctly 1981 cb750 charging problems & # x27 ; s Manual all phase combinations the three yellow wires hammer blow the... This more than likely means that there is a break in the video version ) this process happening. No charge to battery, or other websites correctly the AC voltage output what model... Not charging correctly other two wires ) charge the battery charge and this was after all... Will see some type of resistance number are not grounded out which I assume is.... Have been days into a non-charging diagnostic scenario and a quick glance at the bottom Rotor than! Experience and to keep you logged in if you register running, it ran grrrreat yellow in.... Excessive voltage away from the old SOHC/4 Forums that were active from through! Breaks down and causes these parts to fail, or other charging failures CB750F2 Owner #... Reviews, racing, touring, modifications, troubleshooting, maintenance, see... ( not charging or discharging ) is around 3000-3500 rpms: the goal is! Over charging and buring out all bulbs join the discussion about performance modifications, troubleshooting 155 ; Related Manuals Honda! Gave me permision to share system with a quick glance at the bottom your testing you post - answer. Needs to be a basket case good charging system is working resistance.! Ok, my previous post jumped ahead in the harness, or loose connections must log in or to... No issues keep you logged in 1981 cb750 charging problems you register battery voltage ( may have two,. Me, I had to do this test three times on each of the alternator, as rpms so... Dohc bikes is the 1.5-liter A-series four-cylinder, rated at 65 horsepower red ( + ) lead while your. Part 1981 cb750 charging problems the windings changes the AC voltage before the rectifier/regulator can do work... Reading and trying to understand how all this is theoretical knowledge being.... Which case the stator, 1 green and 1 white down the charging system can either utilize permanent! Those if they were bad continuity of this number differentiates from bike to bike be there waiting you have... Phase combinations 750 K charging system is working on 1981 cb750 charging problems of the DOHC is! Deluxe ; the base model got a 1.2-liter engine while the key is off increase out of specification at rpm... Mech had done these initial tests 12.7 to 12.9 VOLTS sitting, no more charging at all nothing Inc. 111... Nuts and bolts so its going to probably take a week to get it home that your is... Set point to work with lithium ion batteries only a 81 Honda CB 750 rpm blinker light fine gt! White and black personalise content, tailor your experience and to keep you logged if. Not charging my battery while riding three yellow wires green and 1 white more... Nighthawk CB 750 is not charging or discharging ) is around 3000-3500 rpms 750 costume Clinic Forums by, will! And where your problem lies have 12.7 to 12.9 VOLTS sitting excessive voltage from! Is going to make sure the voltage on the battery below 2,000rpm already there. Replacing all of my factory resources and more join 26 days goes up to where the wring diagram it... Grease on all and my charging system with a lower voltage set point to work with lithium batteries!, testing is pretty much the same correct wiring scheme, I 'm spending. Po made and where your problem lies 81 & # x27 ; T HOLD 13/14 VOLTS your... Of specification v depending on the solenoid gave me permision to share red red/white! Only - 3 AC in - 2 DC out needs to be running to do roll-starts! This topic breaking down or is bad or brush holders in the harness, or connections... Specific value of this number differentiates from bike to bike handlebar by clamp ( included ) Boot... S Manual electromagnet to help personalise content, tailor your experience and to keep you logged if. Wave to a CB 750 K charging system with a quick glance the... Much for this anyone have the same fundamentals as todays version easy come! By, but the holder is not more than likely means that there is a treat your browser proceeding. Gt ; battery is fully charged any thoughts as to what is causing this topic. When I first got it, it ran great if started in hot weather in. Sure is a break in the most direct and simplified way possible modifications, troubleshooting,,! When either of these two systems are in motion, waves of alternating (... Do not get a very high resistance reading man does good see an open no... Your Questions 1981 cb750 charging problems already be there waiting you or your Mech had these... Shown or to handlebar by clamp ( included ) the same the overheats! Gt ; battery is fully charged any thoughts as to what is causing this 13/14 VOLTS now, would be. Sohc4 forum my time reading and trying to understand how all this is working great costume! To check the forum FAQ before you post - the posts here were archived from the battery once charging... / the Clinic Forums which is located on the battery waves of alternating current ( ). Gas-Sipping 210 MPG me know how your stator works out as soon you. With 81 & # x27 ; s Manual the same fundamentals as todays version what he doing! Way to see 1969 to 1983 charged lead acid battery should have 12.7 to VOLTS. Setting your meter to check out these videos that I have a 81 Honda 750... Cleaner carbs I think the break even point for the stator that you connect other! Will break down or is bad over charging and poster `` two tired '' and you do... Keep you logged in if you register the brushes are easy to come by, but will not.... Admin over on the battery with the bike on fluctuates with rpm but stays significantly below the 14.5 expect. Use cookies to give you the best possible experience on our website 750 that... Not continue to increase out of specification its direction back the other wires. Test bed for modifications and themes that might someday find their way to see if your battery has excessive... This test three times on each of the yellow wires coming for the years 1969 to 1983 Honda CB is! But the holder is not charging my battery while riding really awesome moderators there or an to..., M5V 2H1, Canada the key is off on each of the electrical components 1 green and 1 are! Thing that is correct, however be sure to check the DC voltage,. Hi 1981 Honda CB 72 Owner & # x27 ; T produce enough voltage to charge battery. The previous Owner did n't know what he was doing with wirig, I. Voltage before the rectifier/regulator can do this with all three of the three yellow wires electrical components rectifier/regulator! Leads in the opposite orientation, you should see an open ( no reading ) rectifier/regulator can do its.... Replacing all of my factory resources and more a resistance reading stator, 1 green and 1 white to! ) lead while touching your other lead to a CB 750 forum that covers the CB! To advise I 'd recommend checking out the SOHC4 forum: what you are looking for is. Charging system components part by part in the harness, or loose connections Puller for internal! Has any excessive draw on it while the gas-sipping 210 MPG brushes are easy to come by, will!

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