Hi all,

I had a similar set of symptoms in my 1991 GQ with my high beam lights, only one would come one and the other would turn off totally, when you flicked the high-beam leaver. After swapping lights still a problem on the same side (so eliminated issue with bulbs).

Anyway after a long day tracing wiring etc my problem was in the multi-switch (RHS of Steering wheel) that controls lights and high beam etc. Removed it from the car (which involves removing the steering wheel) and cleaning the connectors with sand paper, replaced it and all good now like magic !!!

Greg