We just bought a 2013 Casita 17’ camping trailer, which has Dexter electric brakes. The OEM brake controller in the Expy recognizes the trailer, and the electronic gain adjustment seems to work. But it does not actuate the brakes. I checked the terminal on the 7-wire connector, and the blue wire that feeds that terminal, and there is no current when we press the brake pedal. So the problem would appear to be with the Expy and not with the trailer.
I am not getting an error message on the Information Display, which the manual says I should if there is an interrupt or short. I checked the 30A fuse for the line and it looks OK, as does the fuse for the controller. So what’s the problem?
The previous owner never used the electric brakes; he was actually unaware the trailer had them. The Casita is light enough that he could tow it with a Nissan Frontier V6 pickup. I was worried that the drums might be rusted and/or the brakes inoperative after not being used for three years, but I took a wheel off and adjusted one, and it would adjust to the point where I couldn’t turn the drum; then I backed it off a little. Besides, there’s no current at the terminal on the Expy!
I’m stuck. Any ideas?