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Offline rappz7

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Wiring question
« on: September 16, 2016, 09:46:40 AM »
So im wiring up a new start/kill switch on my 1979 cb650 and i redid a bit of the wiring so now im not sure how this switch wires up. http://www.thisoldtractor.com/moto_guzzi_tonti_handlebar_switch_-_k_s_12-0203.html This is a link to the switch with a diagram showing which wires do what. This shows six wires but I now only have 5 wires coming from the original harness now. 1 is a black wire which i ran from the new fuse panel I installed 2 is yellow/red coming from the main 30amp fuse coming off the battery 3 is a black/white wire coming from the spark units to the coils or vice versa 4 is a green/yellow wire which i believe to be the brake light/taillight switch and 5 a white/green wire which originally ran to fused power which it still does. There are 6 wires for the switch but I only have 5 coming from the harness am I missing something, maybe a ground? I know this might be hard without any pics but im wondering if anybody can shed some light on this for me. How do I go about wiring this switch up? Any information will be greatly appreciated.
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Offline calj737

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Re: Wiring question
« Reply #1 on: September 16, 2016, 10:22:45 AM »
I'd check the BLK BL/WHT for continuity. Which end leads to harness Y/R?
Looks like Red/BLK - Red/WHT would map to stock BLK-BLK/WHT for power to the coils

The BRWN and GRN/WHT are listed as optional pass thru, so I'd imagine you could abandon them?
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Offline rappz7

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Re: Wiring question
« Reply #2 on: September 16, 2016, 10:36:50 AM »
dont have it hooked up to any juice so i cant check for that. the wiring isn't done 100%. Which end leads to harness y/r? What do you mean by this? So red/black would go to power (fused black wire i installed) which would be the on position to start the bike? red/white to coil wire (black/white) which would kill the power when flipped to off? which wires from the harness go to the starter button (blue/white, black). brown and green/white would be for my tail light i guess which there are connections for on the brake perch which would be the green/yellow wire from the harness. But how about the white/green harness wire?
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Offline calj737

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Re: Wiring question
« Reply #3 on: September 16, 2016, 11:01:49 AM »
In your stock harness, GR/Y is for the brake switch, not power.
Y/R in your stock harness is the electric start switch. That maps to BLK/BL-WHT on the new switch.
You've got the coil power figured out.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline rappz7

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Re: Wiring question
« Reply #4 on: September 16, 2016, 11:17:21 AM »
Thanks for the info calj737. Its starting to make sense to me. Gonna tinker a bit and see what I come up with.
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