Parts Needed to Install a Trailer Brake Controller on a 2011 Great Wall V200  

Question:

Expert Reply:

If you know what chassis the vehicle was built on, that will help determine where the wiring for adding a controller is ran. Most likely, you will need to do some hardwiring. Since you already have a 7-Way trailer connector, find the wire that is attached to the back of the 7-Way in the 5:00 position (for blade style) or center pin (for round pin style 7-Way).

Follow that wire as far forward on the vehicle as you can. Next attach a length of # 10-1-1 wire to it by severing the connection as far forward as you can get. You will attach the wire to the end that leads to the 7-Way. The other end you will route the rest of the way forward, up through the engine compartment, through the firewall, and attach it to the blue wire on the brake controller. This wire is sold in increments of 1 foot so you will need enough to reach that far.

You will also need some additional wire to make the remainder of the connections. Attach some 10-1-1 wire to the brake controller white wire, route it through the firewall, and attach it to the negative battery terminal. Then attach some 10-1-1 wire to the brake controller black wire, route it through the firewall, and attach it to either a 20 amp circuit breaker, # PK54520 (for 2 to 4 brakes) or a 30 amp circuit breaker # PK54530 (for 6 to 8 brakes). Then from the circuit breaker attach some wire to the BAT post and route the other end to the positive battery terminal.

When routing wire in any of these steps always avoid areas that may pinch or burn the wire.

The last wire is the brake controller red wire. Using a circuit tester like # PTW2993 if needed probe the wires on the brake switch located above the brake pedal. You need the one that shows a signal only when the brake pedal is pressed and not when the headlights or turn signals are on.

I have included a link to an FAQ that will help you. Since you already have a 7-Way installed, you can skip that part of the article. The dealership that sold you the vehicle might be able to tell you where the wire terminates for the brake controller blue wire instead of making the connection under the vehicle.

expert reply by: Michael H

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