Your Dodge Durango is a capable towing vehicle when properly equipped. The 2011 model year is rated to tow between 6,200 and 7,200 pounds, depending on your engine size. Every trailer on public roads must have at least signal, brake and marker lights to meet the Department of Transportation regulations. These are powered by a 4-way connector fastened to your vehicle's electrical systems. Installing a 4-way connector can be done with a little trial and error and a few common tools.
Open the tailgate of the Durango and remove the screws which fasten the taillights to the light sockets. Remove the taillights and disconnect their power wires at the connections.
Place the vehicle's ignition in the "power on" position and activate the left turn signal using the driver's controls.
Connect the 12 volt test-light's alligator clip to a bare metal section of the body near the left turn signal.
Probe the bare metal connections in the taillight's electrical connector for the power wire to the left turn signal. The test light's bulb will flash when you have found the correct wire. Repeat this process to find the power source for the right turn signal and the marker lights.
Fasten the harness's yellow wire to the power supply for the left turn signal with a scotch lock connector. These connectors work by placing one wire in each groove and locking the latch. Connect the harness's green wire to the power supply for the right turn signal, the brown wire to the marker lights and the white wire to any black wire with scotch lock connectors.
Wrap the connections in electrical tape to provide extra protection and fasten any loose wires with cable ties.
