How To Install Trailer Brake Controller On 2002 Country Coach Motorhome W/ Air Brakes

Question:

I have a 2002 country coach motor home that has air brakes. usually there is a wire coming off brake pedal of most vehicles. the motor home only gives air pressure off pedal. do you have a system for this application as i know there are several units on the road in this same situation.

asked by: Kelly S

Expert Reply:

Even though your 2002 Country Coach Motorhome has air brakes, you can still use an electric trailer brake controller like the Tekonsha Prodigy P3 # 90195 but you will need to make a few connections.

The pigtail of the P3 # 90195 has 4 wires which need to get connected to the following functions:

Red wire to cold side of stop light switch
Blue wire to trailer brakes
Black wire to positive terminal of vehicle battery
White wire to negative terminal of vehicle battery

Even though your Motorhome has air brakes you will still have a stop light switch as it is what powers your brake lights when you apply the brakes. The cold side of the switch is the wire that only has power when the brakes are applied, to find this wire you will need a circuit tester like the # PTW2993.

If you do not already have a 7-way connector on your motorhome you will need to install one using the # ETBC7. The # ETBC7 will plug into a 4-way connector so if you do not have a 4-way connector you will also need the 4-Pole Hardwire Kit with Circuit Tester # 18252

I included videos for each of the products mentioned for you to take a look at.