Ok brothers I am having trouble with my trailer lights. Everything is working exept the marker lights on the side of the trailer. It is a trackor trailer and has the wires running threw the trailor so I can't see if there is anything broke but everything else works so there shouldn't be a broke wire. I checked the fuses in my 2000 gmc sierra and don't see any blow. They did work I was coming home from the river last night and seen they where out. They where working berore I left. I checked to be sure. Don't know what it could be. Any suggestions?