Topic: question on wiring

[jay72chevy1]

Anyone know where I can get a new wiring harness? The main power wire on bike wasnt working because when i went to shut off at the key it stayed on. So I found a hot wire off the plastic slide connector stripped the red hot wire and attatched another wire to it and run it to the posative side terminal. Then the  when i turn key off it shuts off. So somewhere in the harness its messed up going from switch over the main frame.

[Rsnip988]

silly question for me to ask but what bike is it for?

[jay72chevy1]

1973 cb 750  the number says on the motor E But i thought its a K

[MrZxp]

1973 cb 750  the number says on the motor E But i thought its a K

You do have a K, the E on the engine serial number is normal.

Anyone know where I can get a new wiring harness?

I would suggest that you download a copy of the shop manual for your bike and (hopefully) therein will be a wiring diagram. Use the wiring diagram to help troubleshoot the electrical problem(s) you are having. A far easier thing to do than try to source a whole wiring harness I would imagine!   

Here is a link for the manual download: http://www.sohc4.us/forums/index.php?topic=17788.0

Cheers, Phil

[Rsnip988]

go here:

http://www.sohc4.us/forums/index.php?topic=17262.0

you want the third one, K3-K6 have the same witing diagrams and they are in color easier to follow and trace

if you want a whole new harness

https://www.partsnmore.com/cat_index.php?model=cb750_sohc&category=electrical

Part#24-4001 MAIN WIRE HARNESS LOOM - CB750K (73-75)
 Fits: Honda CB750K (73-75)
Main Wire Harness Loom.
High Quality - NEW PRODUCT!
NOTE: These fits models years listed, early years CB750K use a different OEM part # and they do not supercede to this number so there is a difference.
 at only $75 not too bad a price

hope that helps 

RKS