electrical

Hello all, My father has a honda cb750 custom exclusive, not sure which year but is pretty identical with this one...

On my 1971 K1 my brain is getting fuzzy.....my bike will try to start if I hit starter button when it’s in gear can’t recall if this is normal for a K1? Lurched and Jumped ahead on me today when I stopped and restarted and I almost tipped over I dont have a clutch switch @ lever but as I recall...

To start I have a 1981 cb 750c bought for cheap and have dumped money into with new parts I replaced entire wiring harness after it got real hot real quick. A little background on my current situation is as follows. Rear lights are on so that’s good but front brake switch kills power to them and...

Hi I ride a 1992 750 nighthawk and suddenly I have no power. All fuses check, key contacts main fuse. Must be starter solenoid? thx

Just now getting into the Honda 750's. Purchasing a pristine 1976 from original owner with 2,673 miles. Bike came from the dealer with pull back handlebars I want to replace with original style. I have owned Kaw Z1's for years, bars simple to change as control harnesses are strapped...

I have a 76 750hondamatic frame- a 74 750 sohc engine, and I am beginning to part search and try to get a build plan. I know i want a cafe style bike, clips ons and moto gadget controls and a cbr1000 fork swap, however i have to get it going before i worry about the cosmetics. So with that...

So over the winter I checked the valve adjustment, followed the procedure for tensioning the cam chains, changed the fork oil, and made a little tab to go on the positive battery terminal to allow easier charging and jump starting. The rubber cover from a chisel point fit over that perfectly to...

Hi guys! Pretty new on this forum! I have a couple of questions regarding the charging system/regulator/LIFEPO4 battery. - I am currently building a CB750 K(z) 1979 with an M-unit and all LED lights https://ibb.co/K9nMMqr I bought a Ultrabatt Multimighty 12200M+ 150CCA and connected this in...

Hi all, I'm rewiring my '81 CB750C. I just got to the starter solenoid, which I assume is the original, OEM unit. I see the 4 male connectors go to the reg/rec, starter switch, ignition switch, and clutch diode but I'm unable to find out which one is which. Is there a way to test them? Does...

I have a charging issue on my 1981 Honda cb750. It is very strange because when the bike was sold to me, there was an issue with the battery charging. Then we scrubbed down some of the ground terminals and it seemed to work well. Over 6 months my friend and I rebuilt the whole bike and after the...

Hello, just brought home a 79 CB750L project. Bike is partially together and was able to get it running with some jumper cables and starter fluid at the previous owners place before making the purchase. Once i got it home, i tried again as i wanted to do a compression test. Yeah, i know, should...

Hello, new member here that has been wanting to do a scrambler/tracker build for many years. With the extra time during the pandemic, the fire started burning again so I started to look for donor bikes. After lots of searching and passing on bikes that I later wished I had taken, I realized...

So i have a 1981 DOHC CB750C, runs great at an idle; but as rpms climb while riding it cuts out as if it's not getting fuel/air. I suspect electrical to be the cause. Reasons being that I have completely disassembled all 4 carbs and rebuilt them. Charging system is all new and verified that it's...

hello, im just re installing my wiring harness and have a connector that i cannot figure out what's supposed to plug into it. Its circled in the picture i Attached, the bike would run before I took it out and now I can't even get my lights on so any help is much appreciated, its a 1980 cb750c.

82 cb750sc /No Break Lights ..my tail lights are always on when my bike is on but they don't light up brighter when I hit the breaks..

This feels like another “Weak Spark” help thread but I’ll go ahead anyway because Ive ran out of knowledge. In short I’m having trouble with my 1980 cb750f not running on all four cylinders. 2/3 seem to get to temp pretty quickly while 1/4 are cold. So far I’ve tested : -Primary and secondary...

Gents, I have a cb750f 1976 and my 7a tail fuse blows immediately as I turn the keys to on. I have taken all tape off the wires and traced everything and nothing seems out of place or corroded. my tach and speedo lights don't work my starter switch doesn't work and it doesn't trigger the starter...

I bought a new fuse box from Vintage750.com for my 1976 CB750f and on the wiring diagram and old fuse box it shows it uses 7A, 7A, 7A, 15A, 15A. However, the new fuse box that says its meant for this bike and fits and the fuses it has slots for and is marked uses 10A, 10A, 10A, 15A, 15A. do I...

Doing a cafe build on a ‘80 CB750. It’s still in about as many individual parts as it can possibly be, but I want to figure out horn placement before I have it powder coated in case I need to weld a bracket. I’m thinking of hiding my horn underneath the tank near the coils, but it’s kinda...

Hey guys, I see AMC and Dirtdigger still answering everyone questions. I'm hoping you can answer mine. I need a new battery for a BMW and I'm looking at both the Yuasa and Niche. The price is the same and both are AGM type. Yuasa seems to have been around forever and Niche fairly new. The...

Hi newbie here. Just bought a 1980 CB750 custom. Decent bike but having issue with the lower right fuse blowing instantly. I traced the the brown/blue wire that comes from the fuse which turns into a brown/white as far as I can. Short of tearing the whole wire harness apart not sure how to check...

hi, please can someone tell me the correct way the blue yellow black and white are on the coils cb750FB 1981uk model coil 1-4 blue to the + pos terminal black/white to the - neg terminal theses are looped together to each coil coil 2-3 yellow to the + pos terminal...

So I have been trying to wrap my head around the connections inside the headlight for the blinkers, etc. My headlight works (high beam and low beam) and the blinkers front and back work off the switch on the left controls. What I cant seem to figure out is why my amber lights aren't staying on...

I have been slowly rebuilding a 1980 CB750F Super Sport for the better part of 5 years. It's been a saga blah blah blah. I finally got it running well enough to ride for longer than a few minutes. Took it on a nice long ride to see what the plugs were doing. Pulled them, rich, re-jetted, started...

I am brand new to motorcycles and mechanics of their engines. I have a 1995 CB750 Nighthawk that was running until a few days ago when it refused to start .... engine clicked once when the starter button was pushed. I tried some electrical testing and all seemed okay (not sure, cause i don't...

I am brand new to motorcycles and mechanics of their engines. I have a 1995 CB750 Nighthawk that was running until a few days ago when it refused to start .... engine clicked once when the starter button was pushed. I tried some electrical testing and all seemed okay (not sure, cause i don't...

I have a stator coil which I ended up not needing. I believe it's for an SOHC 750 but I'd like to make sure before getting rid of it. What information is required other than the photo.?

So will exhaust from a 1980 Honda CB 750 C fit a 1981 Honda CB 750 K,.?

Will exhaust from a 1980 CB 750 C fit on a 81 750 K ?

Hi. Does anybody out there have original parts books? Or, can you tell me if a ‘76 CB750A headlight assembly is the same for all models? I need a complete headlight assembly and turn signals for a CB 750A. Thanks.