Rear Harness White Wire

[HotWheelsBurban]

There are factory service manuals complete with wiring diagrams available for free download (in the engine section)

But this is a pretty basic one.

Dark green - right turn/brake
Light green - reverse
Yellow - left turn/brake
Brown - tail, tag lights

Richard

The white wire, on the trailer connector harness, is the ground wire. Don't hook it up, and the truck lights will still work, but no trailer lights will. Guess how I know.... BTDT.