i want to add a few tool box lights onto my 89 c2500 and i was wondering what people have done for routing wires and what they have used to feed the lights? i dont have any drain plugs in my bed and i have a spray in bed liner. running to my trailer plug for a feed i assume and then either drilling a hole and adding a plug under the tool box or just dropping the wire between the bed and cab? any info or ideas appreciated. thanks