TRAILER TOWING GUIDE
TRAILER BRAKE CONTROLLER INFORMATION
SOUTHEAST ARIZONA RV RENTALS
Factory installed wiring harnesses frequently match the flat 4 colors.
ALL OUR TRAILERS UTILIZE THE 7 PIN ROUND TYPE OF ELECTRICAL CONNECTION
|#||Color||Gage||Circuit Function||connector interior|
|4||black||10||battery charge (+)|
|5||red||14||left turn/stop||6||brown||14||right turn/stop||7||yellow||14||auxiliary/back up||NOTE: #7 is the center terminal and currently is most commonly used for backup lights.|
Trailer Brake Wireing
Wiring Diagram for Typical Brake Control Installation
Four wire connections are required for installation of a brake controller.
- Trailer feed (usually blue): This wire connects the brake controller to the 6-way or 7-way trailer connector at the back of the tow vehicle. Some vehicles with factory tow packages already have a wire for this connection. If your vehicle isn’t prewired. Run a wire from the brake connector location, under the vehicle, through the firewall, and to the brake controller. Most vehicles already have a pre-existing hole or grommet to get through the firewall. Furthermore, if your vehicle doesn’t have a pre-existing hole, you will have to drill.
- Ground (usually white): This wire is connected from the brake controller to any reliable ground location.
- Brake switch (usually red): This wire can be found at the switch at the top of the brake pedal. Usually more than 1 wire runs out from the switch, therefore you will have to test them to determine which wire has power when the brake pedal is depressed. Use a quick-splice connector to tap into this wire.
- Battery power (usually black): This wire connects power from your tow vehicle’s battery to the brake controller. Vehicles with a factory tow package already have this wire run from under the dash to the battery. Hence a wire must be run through the firewall and connected directly to the battery with an in-line circuit breaker.
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