I looked last night and there was no indication of a second hole on the inside where a spotlight handle would be.
The only guess I can come up with is it was a hole drilled by the P.O. and used as an antenna for the crappy radio I pulled out.
My plan is to hit Napa or Autozone and locate a antenna I can use for a radio/cd player that I plan to mount under the seat.
Thanks everyone,
Chris