- 1). Mount the magnetic tail lights on the rear of the vehicle being towed. To avoid scratching the paint make sure the surface is very clean. Another common approach is to use a business car between the magnet and the car.
- 2). Run the wires for these lights along the towing vehicle to the tongue of the trailer. You may need to secure this wire temporary to the vehicle using any method that doesn't damage the vehicle.
- 3). Connect the light's ground wire to the four-way wiring harness's ground (white), using a butt connector. This connector works by placing two stripped wires in either end and compressing with pliers.
- 4). Connect the right signal wire to the green wire from the harness, the left signal wire to the yellow wire, and the taillight wire to the brown connection on the harness, using butt connectors.
- 5). Wrap all of the connections in electrical tape, then hold them together and wrap the entire package. Fasten the wires to the tongue with a cable tie.
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