Dana,
Replacing the entire electrical system sounds like a good investment to me. Mine's a daily driver...could afford a much more reliable car, but that just wouldn't be very fun at all now would it?!
Did you do the job yourself or did you have a shop perform it? I'd be curious of what the cost would be to have it done right...I live in the Midwest (Arkansas - Porsche capital of the U.S...)
I've gotta get to work this am, so I think I'm going to take it to the wrench for help with troubleshooting. I hate to do that but I'm time limited this week.

Wish I could quit the job and just work full=time on the P-car!
Ryan