02809bristol

Want to pull my boat trailer and trailer lights aren't working ? Trailer is new and I have a 4 flat/7round RV adapter that plugs into my 2016 F150 XLT super crew V8
Has anyone had this issue ? Looked at fuses seemed ok At a glance

Boudreaux80

I just posted something similar in the Towing section. my 2015 is doing basically the same thing.

https://www.f150forum.com/f82/2015-t...-issue-376010/

I know the 2011-2014s had something about needing to install a fuse and relay, and the bag was in the glove box.Not sure if this is the same with the 15+ models

Havyek

Not to be a dick but are the trailer lights working? Have you picked up a tester to see if the issue lies with the truck or the trailer itself? I know with trailers (especially boat trailers) bad grounds are a common issue.

02809bristol

No issues with trailer lights

toledoUPSguy

iTrader: (1)

Maybe I am misreading what you wrote but why are you using an adapter? Plug right into the 4 pin plug and see if the problem goes away

02809bristol

It should work in either , easy with 7 RV plug , less chance of damaging plug

Double_J

I had the same thing happen to me a couple months ago. The connector on the back side of the bumper where the trailer connector plugs in had become disconnected so neither the 4 pin or 7 pin would provide power to the trailer lights. Its a simple push to lock connector and it's very apparent when it locks in. Might want to check that.

motsco

also check to see if trailer is wired correctly.

brg2015

The truck should work right from the factory. Is this the first trailer you've connected to the truck? If nothing is working, it's usually the ground wire (the white one).

Tat2dcoyote

My trailer lights won't work if my headlights are in the auto position