OT Electric Trailer Brakes

[RWK in WI]

I have a 2005 Tahoe with an Omnitrack electric brake controler. It has worked fine for the last two years. Green light on when trailer brakes are pluged in, changes to orange when brakes are applied.
Today at the work camp as soon as I hit the brakes the light goes out. If I unplug the trailer and wait 5 minutes the green light shown when it is pluged in again but goes out again when brakes are applied. New brakes and magnets about 6 months ago.
Any Ideas would be helpful. I don't have a lot of testing equipment here at the camp.
Thank you for your help.

 

[Anonymous-0]

I'm guessing intermitant discontinuity probably in a groundwire. A cruddy connection that is allowing enough juice to go trhough for the controler to sense the hook up but the higher amperage to run the brake magnets won't go and the controler thinks it's been disconnected.