electrical

I have no power or lights on my 1975 750 Super Sport. What does the main fuse look like and where is it located and how do I find it? My battery appears to be fully charged according to my Battery Tender and Odyssey Charger. I have checked the negative and positive battery cables and they are...

Just bought a 1979 CB 750 F. New battery turns engine over. I tested power to the coils, each coil has power. I have no spark at any of the four plugs. I have looked at the wiring diagram, but not sure what would cause zero spark. Thanks to anyone for some help. I have over 20 early Honda...

Hey guys, hoping you have an idea what has happened to my 1982 Super Sport. I was warming it up prior to heading in to work, standing there holding the Choke out, when I heard a sound like something spinning internally touched something stationary inside the engine and came to a stop. Not sure...

Hi all, I have a 1981 CB750c, that I recently got. I think it is largely stock, no major alterations that I can identify. The problem I'm having is that when I turn the key I have lights and power to the bike but it won't start. I push the ignition button and the headlight dims a little but...

1981 CB750C - I have replaced stator, rotor, rectifier/regulator, battery, starter solenoid (a previous owner REMOVED the fuse and hard-wired the solenoid :banghead:), and I have inspected and clean all connectors to which I have access - the battery is STILL not charging. The highest voltage...

Hey peeps, new to the site and looking for info on wiring harnesses upgrades and suggestions on what and where to buy an electronic ignition kit for my 81 CB

Have any of you tried or have experience using this coils. Seems to be big in japan especially for the CB750DOHC. http://www.asuotani.com/fpkit.html

Hi I’ve got a 1982 Honda CB900F Super Sport a that is having charging issues (I also plan to switch to an antigravity lithium ion battery but currently I am still using a New Lead Acid Battery in the Bike) Currently at idle it only puts out 11.7-11.8Volts DC & @5000 just barley hits 13.1-13.5...

I just started restoring this ‘76 CB750A and I’m curious about a wire that goes from the solenoid to the changing relay. It’s yellow with a red stripe. It appears that somebody cut the wire at the starter solenoid and spliced a ring terminal to it and grounded it to the frame. They did an...

Trying to rework an old 750 but can't get past the electric system. When charging it shows 12.4 volts. Turn the key on and it drops to 11.2 volts. After some testing found the problem goes away if I unplug the generator. Is this normal or do I have a problem? What tests can I run and what...

I recently bought a 79 cb750 DOHC, guy converted it in to a cafe racer and put on these shitty after market tail lights and indicators. He blamed the oil stop lamp being on because they were cheap LED lights, uppon inspection of the wiring there are some relatively unreliable connections and the...

Hello Everyone, Honda CB 750 k7 here. My battery is not charging. Did all possible tests found on website. Passed all of them, except couple (will be numbered bellow). While testing alternator: Passed: .6 ohms measured between phases (3 yellow wires) for stator coil, no short on case...

Howdy ya'll, I am now a proud owner of a 1981 CB750F Super Sport. This is my first bike. Literally bought it yesterday. Riding it back from the guy I purchased from yesterday and the battery died on the freeway. I was able to make it home and I left the battery on the tender overnight. The...

Heya CB750 fam! I recently bought my first bike (a 1975 750F0 Supersport) and I'm loving it. It came with a few projects, and I found yet another one when my bike died about 30 minutes into a ride. I'd like your help on what I can do to get my bike running well again. Tl;dr, I tested the stator...

Hi there, I'm new here but I've owned my bike a few years now (76 cb750f)... When I bought it it wasn't charging. So I've been through most of the electrical.... Got it charging but as soon as the headlight is on it won't supply amperage to the regulator... Voltage is present but no amperage...

Just Bought 82 CB750 Nighthawk. Running on one cylinder. I’m novice but testing seems to indicate bad ignition cores. 3.2 on front and 1.0 or zilch on plug. What and where for best replacement? One Second Q ... Clymer manual suggests NGK DPR8EA-9 But after cleaning paint over from ID plate...

Sorry! RE-posting this because I put this in the wrong section... OK, so, I'm re-wring a Santee box on my SOHC yoppah and I'd like to use the correct color coded wiring inside the box. Does anyone know if somebody sells a kit for this, OR if I can find the original type color coded wiring for...

Hey yoppah-godz… So, I'm re-doing an electrical Santee box on my chopper. I want to re-wire it using the SAME color codes that Honda used. I know, it's weird... BUT, does anyone know if a guy can buy wiring that is color coded like original Honda wiring?

Hi CB750 Fam! Been reading posts on the forum for quite some time, slowly learning and getting to know these beauties. Not until recently where I jumped on a purchase did I find the need to post this. So here goes my story... Found this 1980 CB750 up for sale in my area and snatched it up...

Sorry, posted in the wrong forum, moved it to the 1981 forum. THank you.

Hi! I am trying to figure out how to replace the rear turn signals with new replacement ones for my 1992 Nighthawk 750... the BikeMaster ones that match the original Honda part... the front seemed to be pretty close and I was able to do the front no problem as the connections were in the...

I bought this bike and it had been in storage for about 9 years, i have eventually got it near finished and looking quite good but the only problem I have is when you pull in the clutch lever the neutral light comes on so you dont know if your in neutral or not. Is this normal for this model?

Currently rebuilding a 1982 CB750 I was putting led handlebar lights on. Got the first side on went to try it and the original signal flashed when selected (worked perfectly) then I switched to the new signal and got a steady light. I was confused (not knowing the LEDs didn’t provide enough load...

All, I have a CB750 F super sport 1981 and I measured both picks ups, Hains say 530 ohms.. One read fine the other open circuit - does anyone know if you can get replacement without getting the whole pulse generator as its $350 US, I have only pick up bad. Is there any alternatives anyone know...

I am experiencing a problem with my turn signals. 1. Is there a way the beeper can be disconnected? 2. When I put the switch for Left or Right they will not osolate. It just beep but no signal. the signal trys to work but will not work. If you manually use the turn signal switch the lights...

Since I am off for awhile due to the World crisis . I am working on 1 of 3 Bikes,. The rear Turnsignals on a 81 Honda CB 750 K. Are they supposed to be somewhat loose when you install the special screws,.?

cleaned all conections still nothing it worked before I cleaned them fuses good I have power to main fuse both sides turn on switch nothing

Hi all I am a new member and this is my first post. I purchased a non-running 1980 CB750C. Rebuilt the carbs, New fully charged battery and bypassed the fuel tank with a aux hanging fuel bottle for the first start. I seem to be having ignition problems that are preventing the engine from...

I once heard that sometimes on custom built bikes (mines a '79 750) that the rec/reg might not be properly grounded anymore. The post, which I now can't find, stated a way to run a wire from the rec/reg to the frame or battery neg terminal?... any idea on which wire this would be? Would or could...

I have a 77 CB750F. With the std 1157 bulb the brake light will not come on. I bought a new LED bulb thinking the bulb was burned out. The LED brake light will come on but very dim. I figure I have a bad wire (resistance) or brake switch. I have 12 volts at the bulb on both terminals.Anyone...