having the plug from the harness makes it easy. i got mine from my buddies 84 camaro and we have the factory manual to figger out the wiring. It is all in a Jeep now, and the PO had not bothered to hook up the converter lockup and once i did i saw the temps drop tremendously (30+ degrees) at 45-55mph cruise.

There are simpler kits for about $80 out there, but the painless one includes the vac switch. (they all include the brake switch).

My fix cost $0. My one disappointment was i was hoping for a mileage gain and didn;'t get one. the revs will drop about 200rpm with it locked up, so i guess that is not much.