Trailer clearance lights all out

I have 2011 cascadia. I’m having same problem, tail and brake lights work, but no markers! I’m in fuse panel now, don’t see anything on fuse diagram for tail light fuses or markers, is fuse y’all are talking about located in different spot other than behind glovebox ?

 

I have a 2011 cascadia, same problem, tail and brake lights work , but no markers. I don’t see a fuse for tail or markers on glovebox diagram, is fuse located somewhere else, or does it even have 1?

 

Was there ever an update on this? Mines doing the same exact thing. Side marker lights working, breaks work, running lights on the bottom work...but my top clearance lights on the back of the trailer aren't lighting up at all.

 

Probably just have a line break on power going up there

 

Black wire in the power cord supplies the clearance lights.

 

Having the same problem. All the lights work except the clearance lights. Same when hooked up to 4 different trailors. Checked the fuse and relay. Has anyone found a solution?

 

Begin with tractor. If everything is working, use a test light on your pigtail

If thats working right, check trailer connection (if wiggling pigtail in socket works, check at pigtail, first pins then internal wires) after tgat, anybodys guess where its messed up