Connect Aftermarket Car Lighting

You just installed aftermarket lighting to your car or truck and now you need to connect it to the battery. You will need to set up the lights to turn off automatically when the ignition is off. This method of hook up prevents you from accidentally leaving on the aftermarket lights and draining the car battery.


1. Strip the ends of the positive and negative wires on the lighting, so you have about 1/2 inch of exposed copper wire.

2. Attach the negative wire from the lighting to the negative terminal of the car battery.

3. Open the fuse panel inside the car. Notice that there are two very small spots on each fuse where the plastic is peeled away and you can see the metal of the fuse.

4. Begin methodically touching the wire to the tops of each fuse and checking to see if your device turns on. The car should not be turned on for this step.

5. Identify a fuse that does not allow your device to come on with the car off. Hold the wire against it and start the car to verify that your device does come on when the car is started.

6. Connect the lighting device to the fuse. Pull the fuse out and place the wire in the side of the fuse socket before the fuse, then put the fuse back in place.

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