Connect the red wire to either the positive side of the battery or to a terminal that is supplied by the battery. Most vehicles have a terminal in the engine compartment with a wire extending from the positive side of the battery.
Route the wire up the frame rail on the same side as the battery. Secure the wire with wire ties to avoid damage from exhaust heat and moving
Connect the black wire to ground. This is any point on the frame that can conduct electricity.
Connect the yellow wire to the rear light wire. It is usually a green wire. In some cars, it's located under the rear of the vehicle. Some vehicles have a group of wires within a plastic tube from the driver's side to the passenger side. Sometimes the wiring for the rear lights is routed inside the vehicle in an access panel. Refer to your owner's manual to find where they're located in your car.
Once you've found the rear lighting wires, you will test to locate the wire you need. With the vehicle in park and the emergency brake applied, turn on the ignition and move the transmission to reverse. This will get power to the rear light wire. Do not rev the gas. Use a tester to prick through the wire covering. When you locate the wire that runs to the rear lights, return the transmission to park and turn off the ignition.
Splice the yellow wire to the rear light wire. Use electrical tape to cover the spliced area. Return the wires to the plastic tube.
Test the toggle switch (included in the lighting kit) and leave it on so it works when the vehicle is placed in reverse.
Tips and Warnings
of the vehicle. The black wire will be connected to ground.