88 K5 Trailer light harness

[Charleshugh]

Hey guys, I’m pretty stumped on this one. I can’t seem to get the brake lights on my trailer to light up even though I can get both blinkers to work. I went through and redid all of the connections to my actual tail lights the other day and I thought I had it fixed. Any help would be appreciated. The running lights also work on the trailer

 

[dyeager535]

All truck lights work independently and also when the trailer is hooked up and you try to use the lights on the trailer?

 

[Wes Harden]

I had an issue with some magnetic lights and our RV. I had tail lamps and 1 side turn but no brakes. At first I blamed the cheap Tractor supply chinesium magnetic lights. Turns out the trailer harness on the rv had poor connections at the splice. I redid the splices and it work as designed.