by frank_a » Tue May 31, 2011 7:30 am
I needed to read back a couple of threads to see what's going on!
The only complicated thing about electric brakes is wiring the controller into your vehicle. Surge brakes require an expensive coupler ($100+), and it's not always easy to find one if you have a triangulated tongue. Generally, surge brakes are put on trailers with straight tongues, like boat trailers. Everything else is about the same cost, i.e. drums, shoes, backing plates, except you need a controller, which I think you can find for less than 100 bucks but again, it needs to be wired in. surge brakes can be a problem when you're backing up. Not so with electric. I'm putting electric brakes back on Spot one of these days! My conundrum there is getting Gail's Subaru wired for it. My truck came with 7 plug RV wiring, Gail's Outback didn't (none of them do), and it isn't easy hooking hers up for a brake controller.
Now, as to wiring. There's two kinds. There's 4 pole flat (and 5 pole flat with electric brakes), and the colors are brown (stop/tail), white (ground), yellow (left turn) and green (right turn). Brakes are usually a blue wire. Sometimes 12V power will be added like for your lights just using white and black wires coming from a battery.
The other alternative is the trailer was set up for a 7 wire RV plug. Then the colors change (handy huh?) to green (stop/tail), white (ground), red (left turn), brown (right turn), blue (brakes), yellow (backup lights), black (auxiliary power).
Maybe knowing wire colors will assist in diagnosis. good luck!
Frank
Tiny travel trailer - 1979 Sunline Sunspot. Tow vehicles: 2008 Subaru AWD Outback, 2009 GMC 4WD Canyon. For fun: 1923 T bucket hot rod, 1962 Power Cat tunnel hull speed boat. 1974 Dodge Dart waiting for renovation.