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Shandy · 09-11-2016, 10:58 PM

Studying the wiring diagram from Markus suggests it's going to be the turn signal /dimmer switch that's causing this. I have an ignition switch ordered but that looks to supply power to the headlamp switch only. As the low beams and fog lights all work OK it's really pointing towards an issue with the power supply from the turn signal /dimmer switch terminal 56a to fuses A1 and A2. It looks like the high beam flash control (pulling back on the stalk) has it's own power supply (bypassing the headlamp switch entirely) so this should work independently of any power supply issues from the headlamp switch side. I should get a chance to investigate further towards the end of this week, I'll let you know how I get on!

Thanks for the help and suggestions so far.

09-11-2016, 10:58 PM	#24
Shandy Registered User Join Date: Jun 2016 Location: Scotland Posts: 11	Studying the wiring diagram from Markus suggests it's going to be the turn signal /dimmer switch that's causing this. I have an ignition switch ordered but that looks to supply power to the headlamp switch only. As the low beams and fog lights all work OK it's really pointing towards an issue with the power supply from the turn signal /dimmer switch terminal 56a to fuses A1 and A2. It looks like the high beam flash control (pulling back on the stalk) has it's own power supply (bypassing the headlamp switch entirely) so this should work independently of any power supply issues from the headlamp switch side. I should get a chance to investigate further towards the end of this week, I'll let you know how I get on! Thanks for the help and suggestions so far.