"Standard"
Wire colors to the controller (Tekonsha and
others):
- Black, Battery Positive to controller
- White, Negative Ground for Controller
- Blue, Brake feed from controller to Trailer
plug at back of truck
- Red, tap into truck Brake light switch signal
to tell controller to apply brakes
Remember, the above colors
are just a GUIDE. your colors may be
different, read the instructions!
Below is a typical
Electric Trailer Brake Controller that we
installed in a 2006 Subaru Forester Wagon.
This car did not have a tow package.
All trailer lights were connected with a
standard trailer light plug kit available from
us or any online trailer supply. Really just a
simple plug and play affair for the lights, at
the back of the car.
This page is to show what no-one else will-
how we install a brake controller in the car.
This is for information only, and is used at
your own risk. The normal brake controller
will need a 12 volt power supply, ground, and
signal from the brake light switch. We
normally use two conductor wire, and use one
wire for the brake and one for the 12 volt
power. We will run the 2 wire from the back,
up to the front under the hood, then drill a
hole in the firewall, and run it under the
dash to the brake controller. Then we will
strip back one of the 2 wires, and connect it
to the 12 volt circuit breaker for a power
supply. Doing this then supplies power to the
controller and a 12 volt power source at the
back of the car (this is optional). The wire,
in the 2 wire cord simply runs from the dash
to the back, to operate the brakes.
The ground for the controller is connected to
a good ground under the dash (metal part) and
the brake light signal was found by "tapping"
into the brake light switched wire (only hot
when the brake pedal is pushed)
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