Kill switch problem

[Darkcloud]

I tried to install a kill switch for a frien, I used a relay as well just incase. Well Hope I wired up the relay was like so, 86 looped to 30, 87a and 30 wired to the fuel pump wire, and 85 to rocker switch aand ground to a ground. I re wired it to different relay pins and ended up with the same result the car stayed on. But when wired just to switch without relay it worked


He wants the relay as added security to prevent switch failure, but we cant figure out whats wrong. Is it the relay keeping the open loop which is way the switch wont work when paired with the switch?

Any advice would help us so much

[sonikaccord]

try this way...
86 and 87a fuel pump wire, the side coming from the front of the car
30-to the other side of the fuel pump wire
85- ground
You can wire the in on the 85 or the 86 wire.

87a is normally closed so when you turn the switch on it disconnects.

[Darkcloud]

I'll try that thanks