3 Ignition Wires

My car has 3 ignition wires and my R/S has built in for 2. Can I just hook a relay up to the third wire the same way I would for a second on a normal R/S?CementBrain

Why not?  As long as it powers up when it is supposed toMO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

My car has: Constant 12V-------Red & Red--Ignition harness Ignition #1 12V(+)-Pink-------Ignition harness Ignition #2--------Orange-----Ignition harness(heat/AC) Ignition #3--------White------Ignition harness(Inst./Trans) Accessory----------Brown------Ignition harness Do I connect Orange as Accessry on R/S orBrown?CementBrain

Sounds like a Chevy?

If your RS says the Orange wire on your RS is Accessory: Yes connect to Brown because that is the last wire (Orange) that powers after vehicle has cranked & started

So your New Relay would go to White at ignition switch

MO

Don't Learn from Others Mistakes

You Might Be the One That Knows.

Thanks MO Regards CementBrainCementBrain

By the way, it is a GM. 97 Pontiac GrandAm GTCementBrain

On your 97 grand am the only wires you need to connect are the pink(ignition), white(2nd ignition), yellow (start) and orange (heater). The orange wire is not an ignition wire, but rather your heater wire, it does not stay at 12v when your car is cranking. The brown wire is your acc wire that turns on with your radio. You do not need to connect this wire. Hope this helps in anyway.

October 01,2004 bourgiridis wrote: On your 97 grand am the only wires you need to connect are the pink(ignition), white(2nd ignition), yellow (start) and orange (heater). The orange wire is not an ignition wire, but rather your heater wire, it does not stay at 12v when your car is cranking. The brown wire is your acc wire that turns on with your radio. You do not need to connect this wire. Hope this helps in anyway. How do I get the heater/AC to work then? CementBrain

My car has: Constant 12V-------Red & Red--Ignition harness Ignition #1 12V(+)-Pink-------Ignition harness Ignition #2--------Orange-----Ignition harness(heat/AC) Ignition #3--------White------Ignition harness(Inst./Trans) Accessory----------Brown------Ignition harness I think bourigiridis meant to say something like this: Hook alarm ign1 (often pink) to your ign wire (also pink). Hook alarm ign2 (often pink/white) to your ign2 wire (white). Hook alarm acc (often orange) to your Ign3 wire (orange). The reason you can get away w/ this is because your heater doesn't need to be powered during crank. If that's the only thing on that circuit, I'd certainly agree... Leave your car's accessory wire (brown) not hooked up, because you rarely need the radio (or anything else on the acc circuit) in a R/S, and if you do, you're probably in the car anyway and can just turn the ignition... Me

Oops. Didn't mean to quote your old post. Wish I could have edited that post. :( Me