Pic at hatch

Personally I'm gonna go with an eletric solenoid. One wire up the inside of the hatch from the solenoid, to the top of the window. Drill a hole through the top of the hatch near the hinge, and another through the roof panel. Using a rubber flex tube like modern cars do. Then through the roof panel, down the side of the car, along the side floor where the ariel cable is, and up into a push switch mounted either in the glove box (or on the dash or center console somewhere). Completely invisible, except for a small run between the roof and hatch of of a few inches.

Sounds good! I had the cable from a mates wreck so I decided to try it. A solenoid does sound good though.