Sudden loss of signals, lights, wipers, horn, etc.
 

I have a 2001 Audi A6 2.7T Quattro that suddenly lost lights, turn signals, horn, wipers, heater/AC fan, etc. One day it was fine, the next day I went out and started her up and all of the aforementioned items were inoperable. Car runs fine and the dash illuminates but that's about it. The car has 135,000 miles on it. I love the damned thing but it's starting to nickle and dime me to death. The Audi dealership said to bring it in and they would take a look for a couple of hundred bucks! That may be the way I have to go but there is a lot of wisdom on this forum so any and all suggestions are welcome.

Many thanks!