No brakes on trailer

crazyro wrote:

cummins2014 wrote:

Cummins12V98 wrote:
When I did a EOH brake system on my Boat Trailer I would get an intermittent no trailer connection "NC". It drove me crazy till I just happened to touch the ground wire while looking for a bad connection and noticed I had not tightened the bolt fully to the frame. Snugged it up and all was well!

Bingo, was hoping someone would mention ground, had the same issue . I was looking to see if the OP mentioned checking the ground, he did mention getting the ground thru the ball, not a good way ,it will be intermittent no trailer connection ,been thru that also, I assumed I was getting a good ground thru the ball .

When I realized I wasn't getting a good ground on the trailer , I connected a separate wire to the trailer ran it alone the the other wiring, and connected inside the plug where it belonged , all was well then . IMO the OP is not grounded well enough .

To the OP ,do you get intermittent " NO TRAILER CONNECTION " ??? Also you did mention you see no ground wire ???

I looked all up and down the trailer for a ground wire hooked onto axle or frame but didn't see one - that's why I mentioned ball as I know some trailers use it for ground (and have read that it's not a solid connection). I may just have to open the box and run an additional ground wire.

The thing is ,if its not getting a good ground ,most likely your lights will not be working, I wouldn't think . You did say all the lights are working ?? When the brakes are pressed are you getting the 12 volts or whatever to the plug on your truck, you may have mentioned you checked that ,and I missed it .