Hello I’m looking for help. Got a 2014 f250 with the 6.7 power stroke. The reverse lights do not work. I have No power coming into bulb socket, nor any power in trailer plug for reverse lights. Checked the fuse #15 in passenger floorboard. Everything good with the fuse. What do I need to check next?

 

Check the relay (if any). Borrow a relay from another device for testing purpose.

 

The signal starts at the (MLPS) switch mounted on the trans. Good place to see if it is coming out of there. The cable/rod moves the switch to activate reverse lamps.