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Thread: 1978 R100RS Turn Signal Relay

  1. #1
    Registered User Blueman's Avatar
    Join Date
    Sep 2007

    1978 R100RS Turn Signal Relay

    Sometimes the turns signals work, sometimes they don't, sometimes I can hear the clicking of the relay in the headlight. I think it is going bad. I have looked on the parts fiche and several different relays are listed. Can someone out there in BMW cyberland tell me what part I am looking for?

    Thank you. I always appreciate the help from those more knowledgeable.
    Richard Stone Indianapolis
    2004 R1150RT Biarritz Blue
    1978 R100RS Cafe Racer
    Often wrong.....never in doubt.

  2. #2
    P Monk
    Join Date
    May 2005
    Port Neches, Texas

    Hella flasher

    Mine was doing exactly the same thing. Pulled off the headlight and checked the connections which were clean. The replacement is a $93. Called Mororrad Electric and talked to Rick. He has a flasher for about 1/3 of the price of the hella but will take some rewiring as it is a 3 pole flasher and the ground wire is not used, since my bike is a rider not a show bike I ordered one. Both Capital Cycle and Max have the original flashers.
    P. Monk
    74 R90/6 (also know by bride as the Black Hole). 09 R1200 GS. My wife, 1953 model who has survived aplastic anemia and a bone marrow transplant.

  3. #3
    Registered User bmweuro's Avatar
    Join Date
    Oct 2009
    Northern Cal
    I have also found if the battery is a little on the low side they tend to do exactly what yours is doing. /5's are worse.
    VBMWMO #7770, BMW MOA #48694, ABC #600
    Hi my name is Chris and I am a slash-five-o-holic.

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