nrsjhl,
I may be able to help you out. I bought one of these off ebay a year or so ago and installed it quickly. However I had the wiring for it.
Is it the autodimming with compass or does it have Homelink and temperature and all that other good stuff?
If you look on the backside there should be a socket for a plug with 7 pins. Do you have the connector that fits into this or is this what you're missing? A picture of the back would be great.
I know that all you need is to run power and ground for the mirror and compass, which are pins 1 and 2. (Not sure which is which offhand).
If you don't have the connector, chances are slim that you will find the one that fits. If the pins are visible, you could always wirewrap the wires to the pins. From the mirror, the wires run in the headliner down the A pillar to the drivers kick panel, where they are tapped into a hot (on accessory) and ground. This would be a cheap way to do it, maybe not the best.
Let me know what you have and I'll see what I could do...
Tom