On Sep 15, 12:53*pm, (BIG FISH 2006) wrote:
I have a new problem with my lights, everything is working except my
brake lights, now what could this be

Earlier this year I discovered something about my F150 I did not know.
There's a separate fuse for trailer connections. I had replaced the
left rear light fixture on the trailer but still had no brake lights.
Trailer mechanic at local shop popped open front passenger kick panel
and discovered a blown fuse. He replaced the fuse and now I have full
lights on the trailer. Maybe your truck, whatever make it might be,
has a similar setup and it may only be a fuse onboard the truck.