I have a 2000 beetle. Here is what I have experienced without any warning:
Electrical system stopped working:
Horn, Turn Signals, AC & Blower, Vent controls, Windshield wipers & Fluid controls, Head Lights.

Here are the electrical systems still operating correctly:
Radio, Brake Lights, Running Lights, Pwr Windows, Pwr locks, Pwr Moon roof, Pwr trunk, Pwr gas door release, Car starts and runs normal !

I have verified all fuses next to the battery are OK, All fuses in the fuse box are OK, I have removed the covers to access the relay panel. I removed all relays and checked all relay coils with a VM and everything looks OK. There were no contacts welded.

No sure where to go from here