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R100GS turn signal stays on (without blinking)
Posted: Mon May 18, 2015 2:38 pm
by DonW
Hi All,
My '92 R100GS is doing weird things, turn-signal wise. First turn this morning, the right signal worked fine. Next turn, the left signal didn't work at all. A minute later, the left signal lights (front, rear, and indicator) were all full on (no blinking) and I can't turn them off ('cept turning key off). And, the whole system seems "locked" - pushing the right signal switch or signal kill switch does nothing.
Thoughts? I'm thinking maybe the signal relay has failed.
Appreciate any suggestions.
Best,
Don
Re: R100GS turn signal stays on (without blinking)
Posted: Mon May 18, 2015 11:45 pm
by DonW
Update- I pulled the electronic module that seems to control the turn signal switches, and the lamp went off. Will try to find a nearby bike to swap parts for a minute and see if my module is bad. If it is- $100+ ... bummer...
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 12:09 am
by Rob
Hopefully the replacement will give 22 years of service like the old one.
You might open it up if a swap does prove it bad.
If not contacts that have gone bad, it might be a bad diode that can be replaced for a couple of dollars.
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 10:36 am
by DonW
Thanks Rob, good point. Not much else in my life that works well for 22+ years, 100K miles, and then fails gently.
I'll try taking it apart without wrecking it. I found a buddy with a spare so I can A/B test it.
Don
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 11:17 am
by Rob
I couldn't find it on RealOEM. Part #, please?
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 1:00 pm
by DonW
BMW part # 61312306014
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 6:44 pm
by SteveD
Part Cross-reference: 61312306014
RELAY FOR FLASHER
From: 08/01/1990 To:
Weight:n 0.115 kg
Price: $135.37 
Part 61312306014 was found on the following vehicles:
R 80 GS, R 100 GS, PD (90-95) (04/1990 — 02/1996)
R 80 GS Basic (96) (01/1996 — 12/1996)
R 80 R, R 100 R, Mystik (91-95) (03/1991 — 01/1996)
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 7:02 pm
by Rob
Re: R100GS turn signal stays on (without blinking)
Posted: Tue May 19, 2015 10:41 pm
by Major Softie
Doubt you'll find a better deal than that for brand new.
Re: R100GS turn signal stays on (without blinking)
Posted: Wed May 20, 2015 1:45 pm
by DonW
Thanks guys. I saw that the night this happened. I found one from a dealer discounted to about $100 which might be a better risk/reward decision. Also, Kisan sells a unit for the K bikes, which I think will work, that has auto turn off (good for an old guy like me) and maybe an option for 4 way flashers.
in the meantime, I'm visiting a buddy that has a R100R and going to check his on mine, etc.
Thanks again.
Don