Hydraulic Brake Controller Question
 

I've got an older Tekonsha hydraulic brake controller (unknown model number). While removing a couple of the previous owner's switches/modifications, I accidentally unhooked/cut a couple of the brake controller's wires. I've searched for a wiring diagram online, but can't find one for a hydraulic model.

I know that the blue wire goes to the rear of the truck for the trailer plug, but not sure where the black, red, or green wire are supposed to go. I'm guessing that the red wire goes to cold side of the brake switch, and the black wire goes to the battery.....BUT what about the GREEN wire?

BTW: I did read online that the hydraulic model is grounded through the steel brake line. Dunno if that's right or not.

Any/all help would be greatly appreciated!

https://www.google.com/search?q=teko...ml%3B800%3B570
I couldn't find much, model number would help. Maybe these guys can help
Trailer hitch, hitches and bike rack (800)298-8924

Time for a new controller???

Or might post in the towing forum.

I have two Tekonsha hydraulic brake controllers and I just went out and checked both trucks.
The brake controllers only has three wires, a black, a red and a blue. The red is not hooked up on either truck, I think it was for brake lights.
The black is power and the blue to the trailer brakes.
It is grounding through the steel tubing.