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79` cb650 transformation [message #299201] Sun, 01 April 2018 03:30 Go to next message
Masika is currently offline  Masika   United States
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(1) Club Racer
First off I hope there are no hard core honda bike fans reading this.. I had a 79` cb650 for 11 years, was my first bike and I loved it. fall of 16` a truck turned left in front of me, ICU for a week and a wheel chair for 3 months, broke 7 bones... frame and forks are shot but id like to build one of those shifter karts. so my question here is , Ive already gotten the bare bones wiring diagram but its missing the start button, it shows the wires that go to the key switch so I have the original key switch hooked up to my kart but the push start button is missing and I have to turn the motor over by crossing the solenoid. which wire ran to the start button on the handle bar and what do I do with it? does it need grounded or ran back to the solenoid or to HOT or what? someone has to know. thanks for your time. btw if you are interested in any other parts except the motor just ask.
Re: 79` cb650 transformation [message #299203 is a reply to message #299201] Mon, 02 April 2018 08:24 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
Hi and welcome.

On late 70's larger Honda's, the starter button configuration was usually this:

Red/yellow going from the starter button straight to the starter relay/main fuse assembly
Black is multi-tapped, as it's part of a common circuit including the stop switch, regulator/rectifier and key switch
Blue/white goes to headlight switch (you probably won't need this)
Black/red goes to the fuse box

Color coding was changed in the 80's (1985?) and again in 1993 but I am pretty sure wiring went like that.

If you miss the starter button, you can just use a patter one for a CB750 or CB900 as they are basically the same.
Re: 79` cb650 transformation [message #299221 is a reply to message #299203] Mon, 09 April 2018 03:50 Go to previous messageGo to next message
Masika is currently offline  Masika   United States
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I have no blue/white wire anywhere in my harness. the 4 wires coming off the solenoid are solid red, solid black, red/white and yellow/orange. they are all 12 gauge except the yellow/orange is very small like 16 gauge or so.
Re: 79` cb650 transformation [message #299232 is a reply to message #299221] Mon, 09 April 2018 14:51 Go to previous messageGo to next message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
Masika wrote on Mon, 09 April 2018 04:50
I have no blue/white wire anywhere in my harness. the 4 wires coming off the solenoid are solid red, solid black, red/white and yellow/orange. they are all 12 gauge except the yellow/orange is very small like 16 gauge or so.
So you want the wire layout starting from the starter relay, not the switch itself? think

If so:

Red -> Key switch
Yellow/Red(Orange?) -> Starter switch, in the specific the ST terminal (only used when hitting the starter)
Red/White -> Regulator/Rectifier
Black -> Common line for switches (clutch, neutral etc)

Hope this is what you were looking for.
Re: 79` cb650 transformation [message #299242 is a reply to message #299232] Tue, 10 April 2018 03:19 Go to previous messageGo to next message
Masika is currently offline  Masika   United States
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so then with the key in the on position the yellow/red/orange.. (it must be faded over 40 years) needs to contact black? Thanks

and yes from the solenoid because my bike was totaled and everything on the front including handlebars and birds nest was trashed. So i had nothing to go off of.

[Updated on: Tue, 10 April 2018 03:20]

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Re: 79` cb650 transformation [message #299245 is a reply to message #299242] Tue, 10 April 2018 09:41 Go to previous message
Kakugo is currently online  Kakugo   Italy
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(18) Geoff Duke
Masika wrote on Tue, 10 April 2018 04:19
so then with the key in the on position the yellow/red/orange.. (it must be faded over 40 years) needs to contact black? Thanks

and yes from the solenoid because my bike was totaled and everything on the front including handlebars and birds nest was trashed. So i had nothing to go off of.
It's either Black or Black/Red. For the life of me I cannot remember what color period Suzuki's and Honda's were and sometimes confuse them . Laugh

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