TRAILER TOWING GUIDE& TRAILER BRAKE CONTROLLER INFORMATIONSOUTHEAST ARIZONA RV RENTALS Click to See that your Truck/SUV is capable of Towing For trailer Tow guide enter azrvrentals@msn.com and Motorhome101 to use the guide Download Our Trailer Users Guide Here Trailer Brake Controller Information Curt ECHO Bluetooth Trailer Brake Controller Instructions
Factory installed wiring harnesses frequently match the flat 4 colors. ALL OUR TRAILERS UTILIZE THE 7 PIN ROUND TYPE OF ELECTRICAL CONNECTION
![]() You may choose to RENT one of our CURT Bluetooth Brake Controllers for an additional fee in lieu of permanately installing a brake controller on your vehicle
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# | Color | Gage | Circuit Function | connector interior | ||||||||||||
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1 | white | 10 | common ground | ![]() |
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2 | blue | 12 | electric brake | |||||||||||||
3 | green | 14 | tail/running lights | |||||||||||||
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.
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- 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.
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- Ground (usually white): This wire is connected from the brake controller to any reliable ground location.
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- 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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