2015 T660. Reverse lights

[Mattman]

Here are a few pictures of the chassis node and it's location. The wires that feed it make a loop. They come into and exit back thru the same harness/glob of wires.

You can see it by looking just under the sleeper, attached to a bracket that attaches to the frame. 3 bolts hold it to the bracket. I removed bolts and left connectors plugged up until I got it out where I could work on it. There is plenty of extra wire. Like 2.5 feet or more extra.
I don't have a diagram or a real good knowledge of how it operates. Seems to control the external lighting for the truck.