[KevinH1990]

Originally Posted by rick3000

Also, out of curiosity are you doing the OEM heated seat install or are you using an aftermarket kit. If you have found a way to use an aftermarket heated seat kit with the OEM heated seat switches I would love to know how.

These guys seem to think there is a way:
http://www.boxa.net/forum/index.php?showtopic=32978

However they did not post step-by-step instructions like Dennis Vogel's. They just make a cryptic remark, "Do you not have a friend who is reasonably competent with a multimeter? It really isn't hard. "

Based on that comment, I think that you will need to splice the wiring for the aftermarket kit into a wiring harness containing the Porsche relays and the Porsche switches. The key to this can probably be found on page 7 of Vogel's instructions in the step labeled "Installing Control Module (996.618.521.00) and Seat Harness (996.612.540.01)" If you can determine which pins on the relay are the power circuit and which are the control circuit, you should be able to figure out how to wire in the switches. I think the relays are fairly expensive, Dennis listed them at $52 each, but that was a few years ago so they are probably $75 or more now.

You might want to enlist the help of someone with an electronics background (like a smart technician at a car audio shop) to help you. A relay is just a switch controlled by another switch so if you can figure out which pin does what you should be able to do it.