It sounds like you are trying to add one to a car that doesn't have it? The actuator on the trunk latch is pretty universal, get one off of any RWD car from the 80's. The factory set up had a wire harness that ran down the left side to the fuse box. If you want it to be kind of factory looking just get that wire from a 79 to 85 Riviera or Eldo/Toro if you dont find one on a Regal/Cutlass(you wont see many on Chevies) and wire it to the accessory/auxillary block located above the fuse block. It helps if you have an understanding on how GM wires accessories in their cars, if you can find a factory shop manual and you can see how this is almost a plug and play. If you use the Riv harness you will have to modify the power supply end to make it work on a Regal.
Eric Fisher