Hitch Wiring Issue

[MO311FAN]

2015 EL. Have towed a couple different campers and never had an issue. Hooked up to camper for the first time this year and no brake lights or turn signals on camper. When I turn headlights on the running lights all come on the camper. Another truck hooked up and camper operates normal. Checked fuses and the look good and ohm out. Suggestions?

 

[MO311FAN]

Should have mentioned it’s all factory HD tow package.

 

[Yupster Dog]

2015 EL. Have towed a couple different campers and never had an issue. Hooked up to camper for the first time this year and no brake lights or turn signals on camper. When I turn headlights on the running lights all come on the camper. Another truck hooked up and camper operates normal. Checked fuses and the look good and ohm out. Suggestions?

You can use a tester that test the truck lights and the trailer lights for $20


Trailer light tester from Amazon

 

[m3olsen]

I don't have the bandwidth to find them for you right now, @MO311FAN , but there are threads in this forum that identified a junction box mounted under the body, above or adjacent to spare tire, that developed corrosion at connections over time and a clean-up there resolved issues. Do a search and see if it helps.