How does one wire in a two wire light?
I touched it to the fittings for the OE light to see which way to wire it. Then when I cut off the wires I see the black wire to the switch plays a role I cannot figure out. It sparks a bit if it touches the red one and if I twist the two wire light wires to the red and green wires that lit it before, it does not light. I tried using the black wire as a ground no joy.

How have you all solved this? The exterior light seems fine except I have no bulb in it.