according to the diagram, the white is the relay signal.

any 12v switch should work.

 

But, it seems to me that most switches only have two prongs on the back side for wires. So I need three for this switch?

 

to complete the circuit for a normal relay, a switch needs to bridge 12v and the signal to the relay. those 2 only. For the LED on the switch to work, you need 12v and gnd. Im pretty sure that the ground exists only for the led to function and not the switch, though you could take the switch apart and see where they all go.

 

That's what I'm gonna do tonight, I have another one that I'll try to carve up

 

let us know. I'm going to guess the switch bridges red and white, and red splits 2 ways, one to switch, one to led, while black is the other leg of the led.

 

Here the switch

 

Not 100% sure about that particular kit but I have seen some similar ones at Canadian Tire (Canadian auto parts chain) and IIRC those sets do NOT use standard automotive relays. ie. the contact arrangement on the relay differes from the standard auto relay. It is for that reason that I am avoiding the pre-made kits and assembling the parts myself.

This way I can find compatible relays at pretty much any auto parts store.

 

Hmmm. Anyone else have an idea to rewire this switch?

 

do you have a multimeter that tells ohms?

 

As a matter of fact I do

 

in the off position of the switch, test the bare ends of the white and black wires for resistance.

then in the on position, test the bare ends of the white and red wires for resistance.

 

Ok, I'll do that

 

By the way, what am I looking for exactly when it comes to the resistance on the wires?