I am in the process of installing aftermarket fog lights and want to intergret it into the the factory fog light button, but i need help with the intergretion.

 

Welcome to the forum.

The way that the factory fog lamps are setup is through voltage always being applied to the fog lamp relay. When the fog light switch is turned on, a ground is applied to the body control module through the fog light switch circuit. The BCM then applies the ground to fog light circuit, allowing the fog light relay to power the fog light fuse.

You didn't state the year of truck you are adding the fog light to. It appears, based upon your picture that it is between 2003 and 2006. One option is the OEM fog lamp kit. It will provide you with all of the wiring, lamps, relay etc.

If the truck did not ship from the factory with the fog lamp option, you will require the wiring harness. Also, you will need to have the BCM program for the fog lamps, if you decide to use the OEM kit.

Good luck with your install.

 

I have the factory relay it was preinstalled. I just need to know which wire i need to connect to so that both sets come on when i press the button