On/Off Kill Switch Question

[J-Rod10]

Bought a Universal switch from Speed Moto Co for my 82 CB750K. It came with no wiring diagram to tell what wires do what.

This is the description of the switch I bought:
Simple, clean switch that combines 2-wire kill switch (positive) and starter button (momentary). Also great for custom builds, drag bikes, race bikes etc. For 7/8" bar. The switch housing is only 7/8" wide so narrow enough to fit between a push-pull race throttle and the brake lever.

It has a yellow with red stripe, two black with white rectangles, one black with red stripe, one blue with white stripe, and two black with green stripes.


This is what I have gathered on the CB wires.
Black - Power to the kill switch
Black/white - Power from the kill switch to the coils
Black/red - Power in to the headlight cutoff
Blue/white - Power out from the cutoff to the headlight (the cutoff turns the headlight off when you're using the starter motor)
White/green - Power to the brake switch and the horn
Green/yellow - Power from the brake switch to the brake light
Yellow/red - Power from the starter button to the solenoid
Black - Power from the harness to the starter button




Anyone possibly know what goes to what? I'm an idiot when it comes to wiring. I have e-mailed the retailer a couple times to see if they have a diagram on it, but no response.

 

[J-Rod10]

Anyone?

 

[Sonreir]

You have a multimeter? You're going to need to test. There's no way of knowing what does what just by looking at the colors.

 

[J-Rod10]

Yeah, I have a multimeter.

 

[Sonreir]

OK... here are my guesses, but you'll probably need quite a bit of trial and error.

1.) Black/red to blue/white should have continuity when the starter button is not pressed, but continuity goes away when it is pressed. This feeds power to your headlight and the colors should match with the harness.

2.) The two black/white wires are probably input and output (doesn't matter which is which) for the coils. Should have continuity when kill switch set to 'run', but not when set to 'off'.

3.) Yellow/red goes to yellow/red (solenoid power) in the harness. Power for this wire probably gets fed from one of the remaining black wires. Should have continuity when the starter button is pressed, but not when the button is unpressed.

4.) If #3 doesn't check out, it's also possible that the two black/green wires are for the brake circuit. Does the control have spare wires with mini spade connectors that look like they go to the brake switch?

 

[J-Rod10]

Two black and green go to brake.

 

[Sonreir]

Three wires to the brake switch?

Do the two black ones share continuity? They might be a pass through.

 

[J-Rod10]

My initial post was incorrect.

There is one black with the white rectangles. The black/red stripe, also has the rectangles.

My initial post, I added a wire.

There are two green and black that go to the brake. Then a yellow/red, blue/white, and white/black.

 

[pjams]

Did you get this figured out? Took me a bit to get my aftermarket kill switch wired too. I pretty much just had to write in on a diagram how/where to put it.

 

[J-Rod10]

No. Never heard back from Speed Moto Co. So, that switch is more or less A wasted $30. I bought something plug and play.

 

[pjams]

Aw sad day. Well hey at least you're set now. I have quite a few wastes of money lying around myself.

 

[speedmotoco]

You should have received this. Sorry for the delay in getting back to you. :-[

 

[J-Rod10]

Just got it. Thanks for getting back to me. Prefer this switch to the stock. I replied to your e-mail.