[LittleBull]

Someone correct me if I am wrong, but there is no wire for the back up lights in the 7 pin plug on the truck.

Seems to me like there is... if I remember right...

top left... running, top right... battery +, center right... R turn/stop,
bottom right... brake. bottom left... ground, center left... l turn/stop,
center pin... back up.


That would be brown, blue, green, red, white, yellow and black respectively