Here you go. I did this same thing a little while ago, the plugs are pretty big so you can just push the wires out with a screwdriver. You also need the corresponding bezel/hood and the defroster, hazard, and dimmer switches. You could skip the hazards and leave the column-mounted 89 one in, but you'll have a hole, and if you do put the 90-91 one in, you might want a new cover for the steering column.