Honda CB750 Wiring Diagrams

'91 - '93 CB750 Nighthawk. From the FSM.
91-93 CB750 NH.jpg


Also same in PDF below.

Good Ridin'
slmjim & Z1BEBE
 

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Ahoj, prosím neporadil by jste mi někdo kde a jak odpojim přední směrovky, aby stále nesvítily, ale jen blikali při znamení směru jízdy? Moc děkuju. 750 Hornet (2024).
 
Hi there, I leave here the wiring drawings of a CB750 SevenFifty RC42. both on original and the color tracing I did manually some time ago, in both jpg and pdf. Hopefully useful for you out there, it helped me a lot to figure out the way the bike is connected to make mods. For the colored wirng diagram, I think is best printed from the pdf in a 135% scale to 4 A4 pages (original file is A3).
 

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  • Wiring Diagram CB SevenFifty color.jpg
    Wiring Diagram CB SevenFifty color.jpg
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  • Wiring Diagram CB SevenFifty color.pdf
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Last edited:
is there a way to convert to 4 coils so there is no wasted spark?
 
is there a way to convert to 4 coils so there is no wasted spark?
Hi, I'm not an expert but I think you'd need four sets of points to have four coils or go to a fully electronic set up with a stand alone ECU, crankshaft position sensor etc.
I don't see a problem with wasted spark I imagine the spark on the exhaust stroke probably helps to clean the plugs?

Loki
 
Let's start a wiring diagram thread. Please add them as you find them...

If you have a specific electrical or wiring question about your bike, please start your own thread and keep this one just for the diagrams. Thanks.

Here are some wiring diagrams I've used or found on the net. The file names give a clue as to what year or model they are for.

Tip: To see some of these at full size, you may have to click on them once or twice after they load depending on the internet browser you are using and your monitor resolution.

I'm sure most of you have seen the interactive wiring diagram at oldmanhonda.com. Also credit to Even Fell for the basic wiring diagram that will work with many motorcycles. I've found that some people like to study these simplified wiring diagrams to gain an understanding on how certain systems work.
Hi everyone,

Does anyone have the MO-Unit diagram for the CB750K8?

I’m looking for a very basic diagram that connects the MO unit to the starter push button, ignition key, and battery. There’s no need ant this point lights, signals, or any additional devices.

Thanks in advance! 😊
 
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