Please help me out here. I have a 2007 Mega Cab and have ordered cab clearance lights that I will be installing this weekend. I have seen the step by step instructions in a forum here or on another site, but I still have the question of: can you use the white wire in the passenger A-pillar as the power supply for the lights? I have seen guys say both yay and nay and would like to know for sure. If you can use it, will the lights come on with the parking/driving lights? I appreciate any help.

Thanks.

 

Test light.