Hey guys: I just bought a used stock trailer from a friend I go to church with. It is a 1988 WW bumper pull with a double axle . The livestock area is 14' x 5' x 6'; total dimensions are about 17' x 7 1/2' x 8'. My questions on this trailer are in regards to the brakes. It appears to have electric trailer brakes, however, the trailer wiring harness connector is just the standard 4 pin. The brakes didn't appear to work when I was stopping the few times I have pulled it so far (Yes, I know they shouldn't work due to the 4 pin connector but this leads to my question). The wires that run to the brake drums appear to lead back to the front of the trailer and appear to be spliced into the current harness. I was wondering if people will connect the electric brakes to the brake light signal to try to achieve non-variable trailer braking as opposed to variable braking from a brake controller? I have no clue and sounds unsafe but where I'm from, I'm sure its been tried. Maybe the brake light signal is enough to apply, say 33% of the trailer brakes and aid some in slowing down? Again no clue if people try this but I was just wondering. I plan to haul goats or horses (2 max) with no trips longer than 15 min and no steep grades so braking isn't a huge deal right now but I would like to get them functional for future endeavors as well as just to keep the brakes active so they stay working properly and for resale purposes. I was also wondering about my truck's brake controller interface, if it even has one. It is a 2005 Silverado 1500 Z71 with the 5.3L, 4.10 gears, and transmission cooler. The gearing and cooler indicate it is intended to be used to tow so I was hoping it had a quick connect under the dash so that I could buy a controller and plug it in and be ready to go...no messy wiring. Anyone got an idea on that? Thanks in advance for any responses. I'll look at the trailer wiring more closely this week in hopes of getting a better idea about how it is wired and why it only has the 4-pin harness and update the thread.