on my 00 I just piggybacked off the blue wire and ran the ground, the hardest part was getting the wire thru the mirror neck all I had to buy was the mirror glass with the led in it. I then tried adding "auto dim" lol learned real fast that 12v to the dimming liquid inside the glass results in instantaneous failure, looked like a fried egg inside I think i had paid like $70 for the glass at the time it was very disappointingYes I just didn’t wanna mess with the BCM harness because if i mess up the BCM harness it’s a automatic mechanics trip the way I did it the worst that could happen is a blown fuse from crossed wires. this required just sticking a wire into the socket for the LED bulb and hood pin ground I only messed up stuff when I tried to do it the professional way it’s fully functional circa today my BCM already has one ghetto wire repair I believe, so I don’t wanna add more splices and make my truck more vulnerable to hit a bump and broken I have to zip tie the wire to the blinker housing and it shouldn’t come off unless I want it too.