The only wiring I have inside the vehicle is from the switch to the relays in the engine bay (multiple). The wires carrying the power are run from the relays to the lights. For these wires, I ran them from the engine bay, under the vehicle, up through my rear bumper, in the space along the hinges of the rear door (this is covered by the small section on the other side of the hinges when the door is closed). There is only a short run from the door area to the roof rack. From there the wires are split out to the various lights.
