Getting ready to add back up lights to my trailer. This is what I have.
7 pin receptacle on truck....2005 F-150.......4 way flat plug on boat trailer connected to a universal plug to fit the truck receptacle.
Trailer does not have back up lights.
Will I need to install a 5 way flat plug on the trailer and run another wire to run the back up lights? The back up lights have a white and a red wire. Should I assume the red is for power and the white grounds to the trailer?