Step 1: What you'll need
A standard light bulb receptacle, Bob found a rubberized one at the store for $4.95 that already had the wires attached.
An "L" bracket, about 1" on each side, a pack of four runs about $3.00
A hose clamp, about 1.5" diameter (big enough to fit around your light bulb socket)
A metal hole cutter, sized to match the diameter of your light bulb socket
Drill & bits
Nut drivers (if you have them)