Don't bother with the power supply - it takes 120V. Since you have to plug the power supply into 120V anyways, tap off of that and connect to the power strip, or however you have power coming into your cab. I wired up an old lamp cord that I cut the end and stripped the wires to connect on the light side, and had the standard plug to go right into the power strip.
If you get one of the Bits Ltd power strips, it will turn on the light when you turn on the computer...