So I'm getting ready to install a back-up camera and I'd like to use the trunk light harness for power. I'm pretty sure its always live (or is there a switch - don't see one anywhere). It has two wires, one white and one red/orange-ish. I'm guessing the red one is the hot one, but not sure. Tried to find on line which is which but couldn't. And with no search function on this forum (apparently) no luck here. Anybody?