I cant seem to get B+ back to the trailer connector in the bumper

fuse is in & red/blk wire(s) are connected to post ! and post is hot !

manual says to push trailer tow button to charge trailer?

is there something I am missing , relay , plug, connection ??? / anyone t

On mine, I connected BOTH lines to their respective posts. The first time I only connected the one that I found below the brake fluid rez, and the lights in the trailer didn't work, so I connected the second line that was between the battery and the inner well and that did it (for me)! Hope this helps!

I just connected both , still nothing , does the truck have to be running ? and does the tow haul need to be on ?

I just connected both , still nothing , does the truck have to be running ? and does the tow haul need to be on ?

Turn off truck, and restart.......see if that works. I read somewhere here that if you connect your trailer HOT, then it doesn't work (hey, doesn't make sense to me, but try it)

NO, T/H has nothing to do with it.

BTW, another person who posted recently found the B+ and GND reversed at the connector..............

Can't make these things up??