Don't need the stock relay assy. A couple off the shelf SPDT relays from autozone can be made to work. I had the original and it died, very hard part to find so I spent an hour or so wiring in a pair of new ones. It helps to have the service manual and a multimeter. The relay assy is located behind the passenger kick panel where it is subject to water. New modern relays are sealed plastic so water isn't as much of an issue. The real fun is you need to remove the front seats, carpet and console if you have one.