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Strange Headlight - Griso

Discussion in 'Chat & Tech Info' started by not-fishing, Oct 14, 2014.

  1. not-fishing

    not-fishing Cruisin' Guzzisti GT Famiglia

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    On this morning's commute I used my high beam in a deer section and when I went back to my low beam it was gone. My high beam worked but no low beam.

    I pulled over, turned off the Griso, waited a few seconds then turned started it back up. Still no low beam so I rode the rest of the way on high. Once I made it to my office I checked my low beam and it worked again.

    Anybody have any ideas? I'm thinking it's the low beam relay.
     
  2. GTM®

    GTM® Administrator Staff Member GT di Razza Pura

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    I suspect you are correct. Keep us posted.
     
  3. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    It could be the switch gear.
     
  4. not-fishing

    not-fishing Cruisin' Guzzisti GT Famiglia

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    Ordered up another $30 relay, heck I'll keep it as a spare on the bike ---------- yeah I was a Boy Scout ASM who was prepared.

    Funny thing is the Griso started and had a low beam at lunchtime -------So it's intermittent just like an Alfa Spyder I had many decades ago.

    Not willing to wait, I played musical relays with one of the other relays. I'd rather have low beam & alternator than high beam without alternator. Also I know which two I switched if it becomes a problem.
     
  5. Oz1200Guzzi

    Oz1200Guzzi High Miler

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    Did that make a difference?
     
  6. ghezzi

    ghezzi High Miler GT Contributor

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    Check the bulb.
    I once had a broken low beam filament on a H4 bulb. Hit a bump and low beam would go out.
    Lean over and thump the headlight (Fonzy style), and it would come back on again.
    Other alternative was to wait until I hit the next bump, and it would light up again.
    Fortunately in Qld, with our fantastic (not) roads, I only had to wait about 2.4 seconds.
     
  7. dlpannebakker

    dlpannebakker Just got it firing!

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    It is possible for a filliment to reattach itself, but it can only do this with lots of vibrations or rough road where the bike is on.
    Reason why I mentioned about vibrations, when I first purchased my Bang& Olufsen system I had a light burnt out, turned up the volume to max, the sound wave (vibrations) were so intense that it bounced the broken filliment to complete the circut & it was the coolest thing. My one buddy was there too cool.
     
  8. JAS

    JAS Tuned and Synch'ed

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    Would be really interested to know if the relay is the problem.
    Bikes in Australia have their headlights hard wired on by law. On a recent ride, the guy I was following said my headlight went off and on a few times over the length of the day ride (made the comment at the last stop of the day), however I have not be able to reproduce the fault (I ride during daylight and can only check at a stop).
    I had thought the relay the most likely culprit, but have looked no further at the problem since.
    Jason
     
  9. not-fishing

    not-fishing Cruisin' Guzzisti GT Famiglia

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    I'll never really know but I suspect the relay. Even though I had purchased another relay I swapped the low beam relay with the high beam relay and haven't had any trouble since.

    Even though I ride nearly every day in the dark I rarely use the high beams due to oncoming cars. I've put the new relay in a little storage are of the bike in case I actually have to replace one of them. I seem to recall that the Griso has three relays all the same size, one for low beam & alternator, one for high beam and one for FI,
     
  10. JAS

    JAS Tuned and Synch'ed

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    Okay, will try swapping the relays.
    BTW, where did you source the relay? Through Guzzi or just a local electrical outlet? Relays in the automotive world are pretty bullet proof and I had thought Guzzi had left behind the bad old days of poor quality electrical equipment....
     
  11. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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  12. contractor20

    contractor20 Cruisin' Guzzisti

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    JAS.... these relays are pretty common now ...I just scored 4 or 5 of them from a smashed late model fords' footwell circuit/fuse panel and they are in one under the bonnet as well. I might use a couple to relay my Nouvo Falcone's headlight as they will fit much more easily in the small shell.
     

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