2015 T660. Reverse lights

[Mattman]

I need a wiring diagram.

Reverse lights are not light up now. Not sure why they aren't. Now the turn signals are acting up.

Both front turn signals work. Left rear works. Left fender does not work. Right rear does not work. Right fender works. Best I can tell it uses a diagonal set up.

It sends power to whatever it wants to illuminate. Ground is good because the tail light works in the same led light assembly.

I feel like the truck knows it has something wrong and shuts down the left fender and right rear blinker. Now why two opposite sides are being shut down is beyond me. I believe it is because that chassis node controls those two lights and the reverse lights.

Thinking my best bet is get it to a Kenworth dealer and let them hook to the truck and see what it is saying.