I just bypassed my auto headlight light sensor in my 2014 gmc 2500hd. this was a canada truck. first you need a 3200 ohm resistor unplug the white connector from your bcm its the #2 plug pin 11 is the signal wire white from the light sensor cut that wire from the bcm and run it to a clean ground through the resistor the bcm will think its daylight all the time and then I pulled fuse for the daytime running lights and now I have total control of my headlights. took about 30 minutes. also I installed a switch so I can switch back to auto.