I used a simple pin switch at the rear door and then ran a wire forward and connected it to the wire going from the door switch to the dome light. There is a good write up on how to do this in Tone's rear door popper instructions. I would need to hunt those down or maybe someone has them in pdf form that they could post.
http://www.ebay.com/itm/HOOD-DOOR-TR...3D120480024835
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-Douglas Adams, Mostly Harmless