[VetteVet]

Originally Posted by mongocanfly

I didn't like the way my interior lights had to be on for my cargo to work so I wired it independent and now the switch behind my head runs my cargo light when I want it...

copied this from chevytalk...

Dome, cargo and courtesy lights are wired differently than most accessories. They have a constant 12 volts applied to the orange wire, and the lights are turned on by grounding the white wire with a switch. This is the opposite of most other items, which are usually grounded all the time, but have the 12 volt power applied by a switch.There is a junction behind the driver's side seat in the cab corner, and it has one orange and one white wire. You can just pop it apart to check for power and ground.- Orange wire always has power*- White is grounded by either the door switch, or by turning the headlight switch counterclockwise.- If white is grounded, the dome and courtesy lights will come on.- If white is grounded, and the switch on the door frame is also on, then the cargo light will also turn on.

You just beat me and a very good explanation.