How do I get my fog lights to turn on with my low beams - Exterior Forum

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How do I get my fog lights to turn on with my low beams
Sunday, March 01, 2015 6:43 AM
I'm installing aftermarket fog lights to my 04 cavalier, I want to use the headlight wiring to switch a relay to turn on the fog lights. When I tested the three wires for the headlight they were all hot, even with the lights switched off.

Is there a switched ground that turnes on the headlights?

Re: How do I get my fog lights to turn on with my low beams
Saturday, March 07, 2015 12:25 AM
You can use a relay that your headlight switch can turn on and off . the headlight switch turns on and off the ground to the headlights you can use the ground the same ground to run the relay.
Re: How do I get my fog lights to turn on with my low beams
Saturday, March 07, 2015 5:13 AM
Thanks for the help, I realized when I tested the wires I used a chasis ground and duh of course all the wires would be hot the ground completes the circuit.

It's finally going to be over freezing here today I'll probably hook them up today.

Thanks again for the help
Re: How do I get my fog lights to turn on with my low beams
Saturday, March 07, 2015 8:47 AM
So close to new england, yet so far..



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