Trailer brake controller wireing

The brake switch, often mounted on above the generator switches the ground, not the hot. I finally mounted mine in the back where everything is easy to find.

Seems that way. It’s going in for service and he said it’s just like the big trucks they usually work on and they will find it for me. Says they stick them everywhere

JRscooby wrote:

ScottG wrote:

ferndaleflyer wrote:
Brake light is red and turn signal is orange so I think they are different. I have been unable to find a switch or wire near the brake pedal so far.

Are you talking about the wires at the 7 pin conn? If so, that's wrong. The brake and the turn signal for each side are contained on the same wire.

I have a idea he is talking about the lens over the lamp.

Ah, that would explain things.

ScottG wrote:

ferndaleflyer wrote:
Brake light is red and turn signal is orange so I think they are different. I have been unable to find a switch or wire near the brake pedal so far.

Are you talking about the wires at the 7 pin conn? If so, that's wrong. The brake and the turn signal for each side are contained on the same wire.

I have a idea he is talking about the lens over the lamp.

ferndaleflyer wrote:
Brake light is red and turn signal is orange so I think they are different. I have been unable to find a switch or wire near the brake pedal so far.

Are you talking about the wires at the 7 pin conn? If so, that's wrong. The brake and the turn signal for each side are contained on the same wire.

ferndaleflyer wrote:
Brake light is red and turn signal is orange so I think they are different. I have been unable to find a switch or wire near the brake pedal so far.

Are you looking at the air lines under the floor? The pedal on most hydraulic systems also works the switch. With air brakes the pedal works a valve, and air works the switch.

Brake light is red and turn signal is orange so I think they are different. I have been unable to find a switch or wire near the brake pedal so far.

I can't help with the exact location but on trucks with air brakes use a pressure switch normally located near the treadle valve. Just need to be sure you find one on the apply, not supply side of valve.

You can't use a brake light wire from the back unless you have seperate brake and turn lights - which is not available at the 7 pin connector.
Otherwise you will get a pulsing in the electric brakes as the turn signals flash.
(I actually saw one wired this way and the cust wondered what was wrong with the controller!)

Thats good but I already have all the light functions wired into the 7 position plug in the back. I can pick up a brake light wire in the back and run it all the way to the front when I run the brake only wire to the back but would be easier if I could find the brake light switch up front, I already have the positive and ground connected in the fuse panel up front.