How to Wire Running Lights With a Toggle Switch

Cut automotive wire into lengths long enough to reach from each light to the next light in the sequence. Strip a half an inch of insulation from each end of each length of wire.

Run a wire from one terminal of one of the lights to the next light in the sequence. Repeat this using the same terminal on every light. The wire should continuously run from one light to the same terminal on all subsequent lights. The first light will utilize a single wire on each terminal. All subsequent lights will have two wires on each terminal.

Twist the ends of the two wires together, wrap the wires around the screw on the terminal and tighten the screws securely. Make sure none of the wire strands protrude from the screw.

Repeat the previous steps for the second terminal on each light. The last light in the sequence should have a long wire attached to each terminal.

Cut one of the wires long enough to reach the switch and the other wire long enough to reach a vehicle ground point.

Strip the insulation from one of the remaining wires half an inch from the end and attach it to the frame of the vehicle using a sheet metal screw with a flat head. Wrap the wire around the screw and tighten securely with a screwdriver.

Drill a hole in a convenient location and mount the toggle switch.

Attach the other remaining wire to one terminal of the toggle switch.

Measure the distance from the switch to the fuse block and cut a piece of wire to that length.

Strip both ends of the wire and attach one end to the remaining switch terminal.

Add a quick-connect terminal to the remaining end of the wire and crimp it securely to the wire with the crimping tool.

Push the quick-connect connector onto a spare lug on the fuse block. The toggle switch will now turn the running lights on and off.