I have put together a few files that should be useful and I think would be a good addition to the site. I've been in the car stereo and alarm business for 15+ years and this info should give a do it yourselfer with some basic knowledge just about all the info they need to install a keyless entry, alarm, and/or remote start system. It's also usefull for troubleshooting. The files are on my site
http://www.c4caraudio.com but they aren't linked to from there. I'll give you the direct links below so you can access them.
90-93 Q4594-95 Q4596 Q4597 Q4598-99 Q452000-2001 Q452002 Q45
Any reference to diagrams #200-239 in these files can be accessed at the following link.
http://www.c4caraudio.com/diagrams.htm
Let me know if you have any questions or want any other electrical related information I may be able to provide. I have also drawn up many custom diagrams when someone needs to know how to accomplish a particular job with a circuit (as you can see at the bottom link above for discoweb.org)