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.
Running wiring for a roof top warning light.
Down the side of the windscreen glass.
It s supposed to be used for a strobe flashing safety light.
Forget about drilling more holes and running the risk of damaging your vehicle when you already have holes for your factory lights.
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.
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.
Chances are if you want the roof marker lamps you re going to be running wires.
Do not just run the wiring loosely through the door jam.
The roof light wiring switch that is part of the plow package is not for marker lights.
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.