Boat Trailer Light Problem

[whitey]

I have a 2018 Sabre FTD and noticed that one of my rear brake lights on the left tail light wasn't working. It's a non LED Optronics ST 70 RB and has one bulb that controls the brakes, lights, flasher. I swapped the left with the right and still nothing, so I switched them back and now the right rear only works when truck headlights is on and no blinker or brake on that side, so both are not operating as they should. I am unsure if it's a ground wire issue or even possibly that the plug from the boat to the truck is bad. Thanks in advance.

[cal z20]

If you have the swing away younger always check for a cut pinched wire

[riverrat29]

Start at the source and work your way back. Usually grounds are a common issue with trailer lights. Use a test light with a good known ground.

[whitey]

I found the issue. It was actually a fuse in my truck that controls the trailer lights. Glad it was an easy fix. Thanks everyone for the for the assistance.

[mactlman]

I found the issue. It was actually a fuse in my truck that controls the trailer lights. Glad it was an easy fix. Thanks everyone for the for the assistance.

something blew the fuse? might have a chaffed wire somewhere? would get some spare fuses for glovebox