I replaced the OEM reverse light with the Carbon Fiber set from Black Tie Motors. They worked momentarily, and now nothing. Side markers, brake and signals all work (one signal hyper flashing), so I don’t think it’s the TNS relay. I’ve read there are some wires on the transmission, but no idea where. Any input or pictures before I get a ticket, CA police suck.

 

Start with the new lights, possible you have a bad LED or something in them. Pull the bulbs, turn the key to On (don't start), put in reverse, and put your meter on the wires and look for 12v.

Dale

 

Just checking, is this the reverse light switch, closest I’ve found using the diagrams. I think that wire is the culprit.

 

Reverse switch is the first one after the sandwich plate on the extension housing (LHS).