How to Wire a 4 to 7-Way Adapter on a Grand Vitara to Power a Prodigy RF Brake Controller # 90250

Expert Reply:

To power the RF brake controller # 90250, it is only necessary to connect the 12v power wire and ground wire on your 4 to 7-Way adapter. If you have a typical adapter like our part # 30717, the ground wire should be white and the power wire is typically black or red. The remaining wires can be tied off.

You also have the option connect the auxiliary wire if you need to power backup lights or another accessory on your trailer. This wire is typically orange or purple in color.

To prepare the adapter to hook up the brake controller, you will attach the ground wire to a clean metal area on the vehicle frame, and the 12v wire will be run into the engine compartment and connected to the positive battery terminal on your 2010 Suzuki Grand Vitara. As you mentioned, a circuit breaker will be installed in line on the black wire. You will use a 40amp circuit breaker like our part # 9510.

In standard brake controller and 7-Way connector installations, the blue electric brake wire is run between the 7-Way at the rear of the vehicle and the blue wire coming off the brake controller itself. Since the Prodigy RF is powered at the rear of the vehicle, this connection is not required.

I am including links to the installation instructions for the # 90250 RF brake controller, as well as some additional information on wiring for towing in general, if needed.

expert reply by: Sarah L