Get the plastic clips to put it back in before you start, you won't ever get the old ones to hold the same way. I hate dealing with electrical issues so I say replace the whole shebang with new stuff. You shouldbe able to get a good control panel from ebay or a junkyard. Getting the door panel off is a little aggravating because there always seems to be one more screw or clip hidden under something. After that comes the fun part of unbolting or unrivoting the motor when you can't see where the screws are, installation is the reverse of removal. It took me a whole day to do my 2 front doors. I was so tired and POed I paid my all knowing mech to do the back 2. (If you knew how much of a cheapskate I am you would know how hard that was.) If you have patience and the right tools and stuff to begin with then DIY. If not pay someone.
88 SSE, new rack and pinion, alt, ps pump, water pump, ac system, factory am-fm radio, 180 stat,chrome K&N intake,Belden 8mm wires, NGK plugs, Delco ignition swap, new coil springs front and back, Gabriel Heavy duty shocks front and back. Strut tower brace and new sway bar bushings.New ceramic pads and shoes. CAI w/Heat shield, tranny cooler, performance tranny rebuild w/HD TC at 500 above stock stall and Trick Shift. 88 SSE, she'* a beast in the makin'!!