JoshC97

For this mod to be done safely you really need to use two diodes. One like all the instructions say and a second one between where the diode connects to the fog relay trigger wire and the BCM to keep power from back feeding into the BCM when the high beams are feeding it power. I bought a X5 (brown) BCM jumper so I wouldn't affect the factory wiring that if I ever had a problem I could remove it from the system without leaving any evidence behind.

Do you have a BCM pinout for a 2016 GMC Yukon Denali you would be willing to post?