Quote Originally Posted by Dick61 View Post
The problem is not with your indicator/dimmer switch, it is with your wiring loom. You should have high and low beam in the outer two lights and the inner ones should only work on high beam. The set up you have at the moment is that the outers only work on low beam and the inners only on high beam, although you should find that the outers are actually single filament high beam lights. When you use the flasher on the indicator stalk both beams are activated but only while the stalk is pulled back. This is correct whether you have twin or single headlights, to have your lights operating correctly you need to change your outer lights to high/low beam lights and correct the wiring loom to suit. If it doesn't already have one, it is a good idea to fit a relay to operate the highbeams.
Factory HZ dual headlights only have a single filament globe in all 4 beams. The outer (low beam) is on for both low & high beam, while the inner comes on for high beam only. BTW from the factory, HZ duals already have a relay on the high beam.

Dr Terry