Here is basically what you are looking at when you go to remove the heating elements:
Basically, the elements are sewn to the back of the red outlined sections. Each piece of leather has an element sewn to it. Then the elements are sewn together. To remove them, you either want to cut carefully along those outer seams, or cut the leather on the outside sections from this. You'll want a utility knife with a new blade and this will go easy.
Wires come down where the blue dots are. The seats I got mine from both came down on the left side when sitting on them. Bill had them both on either the outer or inner sides of the seat.
The relay is located under the front of the seats as indicated. The wires have a few tie wraps and push-in holders under the seats and there is a connector that goes into the main harness that you can remove if you'd like. I suggest getting the whole harness if Possible as it makes wiring easier.
Switches are in the center console. There are three versions: Heated only, lumbar only, and both. Bill and I have the Both. I'll be getting a heated only soon though.
Hope this helps people. If you manage to get them, I can make the wiring diagram available. Again, 92-95 is what this is for.