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R80 Electrical Issue
Posted: Tue Feb 06, 2024 7:48 pm
by Riverman0000
Hi all
First time poster here.
I’ve recently purchased a 1985 BMW R80. Indicators, horn and rear brake light were working, however they stopped suddenly. The indicator did flicker fast before packing up. The strange thing is that they work when the high beam flash is depressed. Relay switch is working when tested, Fuses are intact. Any possible suggestions would be appreciated. Thanks
Re: R80 Electrical Issue
Posted: Fri Feb 09, 2024 4:08 am
by SteveD
Welcommen. 
Have you got a wiring diagram 
Weird things are often earth issues.
Re: R80 Electrical Issue
Posted: Fri Feb 09, 2024 9:46 am
by r67boxer
Riverman0000 wrote: ↑Tue Feb 06, 2024 7:48 pm
Hi all
First time poster here.
I’ve recently purchased a 1985 BMW R80. Indicators, horn and rear brake light were working, however they stopped suddenly. The indicator did flicker fast before packing up. The strange thing is that they work when the high beam flash is depressed. Relay switch is working when tested, Fuses are intact. Any possible suggestions would be appreciated. Thanks
I had a similar issue with my '78 R80. It turned out to be a bad ground to the coil bracket.
Kevin
Re: R80 Electrical Issue
Posted: Sat Feb 10, 2024 5:47 am
by Rob Frankham
Riverman0000 wrote: ↑Tue Feb 06, 2024 7:48 pm
Hi all
First time poster here.
I’ve recently purchased a 1985 BMW R80. Indicators, horn and rear brake light were working, however they stopped suddenly. The indicator did flicker fast before packing up. The strange thing is that they work when the high beam flash is depressed. Relay switch is working when tested, Fuses are intact. Any possible suggestions would be appreciated. Thanks
Is that a monoshock or a twin shock bike? I only ask because 1985 is just about on the cusp of the changeover between the two and the wiring is very different...
Rob