Adding a 6-Way Trailer Connector and Brake Controller on a 2004 Volkswagen Golf Turbo Diesel  

Question:

Expert Reply:

In order to install a 6-Way trailer connector on your 2004 VW Golf, you will need to start with adding 4-Way trailer wiring harness, # 119178KIT. I have included a link to the installation instructions for you to view.

After the 4-Way is installed, you can add the 4- and 6-way installation kit # ETBC6. The 4-Way previously installed plugs into the adapter and the remaining 3 wires will need to be hardwired to the vehicle. The white wire grounds to the vehicle frame. The remaining 2 wires are blue for trailer brakes and red for 12-volt power. This connector is set up with the center pin for the brakes. If your trailer is configured differently, you can switch the wires on the adapter in back where they attach.

You will use the included duplex cable and attach the adapter red wire to the cable black wire. Attach the adapter blue wire to the cable white wire. Route both under the vehicle, avoiding areas that may pinch or burn the wire, and up through the engine compartment over to the battery.

Then separate the 2 wires and route the white wire into the cab of the vehicle through the firewall. Mount the 40-amp circuit breaker to the metal of the engine compartment near the battery. Cut the black wire at the point where it reaches the circuit breaker. Keep the remaining wire. Attach a ring terminal to the end of the black wire and attach it to the AUX post of the circuit breaker. Using the excess wire, attach another ring terminal and attach it to the BAT post of the circuit breaker. Route the wire to the positive battery terminal and cut it again, saving the excess. Attach this final end of the wire to the positive battery terminal.

In the cab of the vehicle, the white wire you routed will attach to a brake controller blue wire. On a brake controller, the white wire on it will need to go through the firewall and attach to the negative battery terminal. Use any excess wire that you have. Then, connect a length of wire to the brake controller black wire, route it through the firewall, and over near the circuit breaker you mounted earlier. In this area, mount the 20- or 30-amp circuit breaker like before. Attach the black wire to the Aux side and add another length to go from the Bat side to the positive battery terminal.

Last, you will need to use a circuit tester like the one that comes with # 119178KIT or uses # PTW2993 to test the brake switch wires located above the brake pedal. Find the one that only caries a signal when you step on the brakes. If the wire also shows a signal with the turn signals and/or running lights it is not the correct wire. Attach the brake controller red wire to this wire once you have found it and installation will be complete.

For a brake controller, I recommend the Tekonsha P2, # 90885, because it is easy to set up and easy to use. I have included some links that should help you with this project.

expert reply by: Michael H

0