Running Wiring For A Roof Top Warning Light

The roof light wiring switch that is part of the plow package is not for marker lights.

Running wiring for a roof top warning light.

Just got a silverado 2500hd duramax and am trying to wire a cab top magnetic red light for fire and rescue. Running wiring from the roof is generally not a plug and play affair and will require some auto electrical knowledge in selecting suitable wiring gauge and the joining or termination of wires due to the extended length of wiring required in addition to the supplied wiring harness. It s supposed to be used for a strobe flashing safety light. When you get the light bar properly mounted to your roof and all the holes are sealed to become waterproof it s time to run your wiring.

This forum helped me find the wiring but is there an existing hole through the roof say under the marker light to get the wire from the light to the switch connection. The best way to do this is to drill a new hole in your roof near your roof mount brackets and run the wiring down directly into the cab of the truck. Do not just run the wiring loosely through the door jam. This is the best method because it is the shortest distance for the wire to travel and it has the least chance of getting smashed in your.

Down the side of the windscreen glass.