Attempting alarm/remote start installation this weekend on A8

[trackfactory]

Hello everyone,

I purchased an aftermarket alarm/remote start for my 97 A8. I'm afraid to have a shop install the thing since most of the shops I called seem to be unsure about attempting the instalation themselves on an A8. They usually say something like "that car might be a little tricky".

Back in the day I used to install alarms and sound systems, but have not done anything like that in years. I thought about attempting the installation myself. I purchased a installation guide CD from ebay, and I'm armed with the wireing diagrams from the factory service manual.

does anyone have any advise from experiance? I would also like to have the alarm remote activate the automatic power window feature on the car.

any advise or cautions would be greatly appreciated.

thanks