pigpen23
Active member
The whole purpose of adding a relay was so that with the BoostAuto Auto Fog mod, the fog lights would work as the factory fog lights did with the mod. The mod activates the fog lights when the parking lights are on and remains on when the high beams are on. The mod also allows the Intellibeam (auto high beams) to function correctly.I've done a few relay installs. The purpose of the relay is to let the ORIGINAL wire to the fog lights "trigger" the relay. I don't think you need to play with the BCM for triggering. Find a place for the relay. If those lights draw a lot of power, grab the power form the battery and add an inline fuse. The relay power is then wired to the fog lights and the OEM wire from one of the fog lights will be the trigger.
The trigger for the relay is the original wire for the fog lights, as you mentioned.