This problem is happening with my R32 91 GTS.
Both my low and high beam lights went out on the left side (separate bulbs) so I first checked there was power on the connectors (there was) and so i replaced the bulbs. They still didnt work, I realised that as soon as a bulb was plugged into the connector (two pin push-in type connector) there was no current on the wire. I tried the other sides known working bulb and still nothing.
I dont think its the light switch because the high and low beam switches in the car are separate switches (one is a twist knob and the other is the indicator lever)
Any suggestions?
Flamer.