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Switched Live feed on a BMW GS

Discussion in 'Technical Discussion' started by Lutin, Dec 23, 2016.

  1. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    Where would be convenient to find a switched live feed on a BMW GS 1200?

    Need it to operate a relay(or two) for a couple of electrical extras - Sat Nav and flashing lights for marshalling duties.

    Ta.
     
  2. Ian Porter

    Ian Porter Administrator Staff Member Forum Supporter

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    Now would this be YOUR GS?????

    Aren't they canbus?

    Tricky beggars to wire up right I bet
     
  3. Steve T

    Steve T Well-Known Member

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    Me, I'd take it from the side light, as it's always live on todays machines. Tis what I've used on both the F8GS's and the F658GS twin.

    If you take that feed to energise a relay that then switches in power directly from the battery (via a fuse of course) for the other circuits you want to use, job should be a good un :thumbsup:

    Steve T

    :cool:
     
  4. austin

    austin Well-Known Member

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    I took one from the live wire that feeds the diagnostic plug using a post tap to access the wire. I could go and check which colour it is. BUT, if I was doing it again I would go for either the live wire to the accessory socket below the seat (advantage/disadvantage here would be the circuit stays live for a a minute or two after ignition off) or from the live to the rear light/or the side light as Steve suggests depending on where you want to put the relay. If all its doing is triggering a relay then I am assured from posts on UKGSer that the Canbus is not so sensitive that triggering a relay from a can bus managed circuit will make it throw an error.

    What happened to the tick tock thread then. I would never have guessed a GS.
     
  5. Philwhiskeydrinker

    Philwhiskeydrinker Well-Known Member

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    Lutin, I thought you are da man when it comes to electrickery stuff?
    I don't know jack about canbus other than in my humble world, it seems an overly complicated way to crack a nut, so can't offer any remotely useful input....
    I'm sure if you spark a couple of wires together, it'll point you in the right direction

    You, a GS1200? Or one of the blood bikes?
     
  6. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    Sorry, should have made it clearer - No, it's not my bike. It's for a mate who's a Blood Bike and Bike Marshal colleague.

    Any "Tick, tock" thread will have to be preceded by a "Build a bigger shed" thread. One of my New Year's resolutions.........
     
  7. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    I had a good look around the inter-web for this some while ago - but got all confused. Using the accessory socket would be fine and the delayed switch off really would not be a problem. But where is this accessory socket exactly? What does it look like? And can I get a matching plug without it costing a fortune?

    Should have made myself clearer in my original post.
     
  8. Ian Porter

    Ian Porter Administrator Staff Member Forum Supporter

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    So, bigger shed in the new year

    When should we expect the Ticking to start?
     
  9. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    Well............. ;)
     
  10. DaveS

    DaveS Administrator Staff Member Forum Supporter

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    Is this for the LC?
    If so I've wired an accessory socket in using a fuse block.
    It stays on for a few secs after the bike shuts down but that's a small negative really for the convenience of using it.
     
  11. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    No, it's no the LC - it's a late Oil Head.
     
  12. austin

    austin Well-Known Member

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    Accessory socket on my 2011 GSA is left side below the seat. Find the switch for the seat and forward about 4-5inches mounted into the tool tray. Or look under the seat in the tool tray to find the innards of it and the wires. Its a DIN plug with a black cap and its well tucked in so you will probably need to get well down to spot it the first time.
     
  13. Flyfifer

    Flyfifer Member

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    Rather than use multiple relays ,triggered by the same ignition feed, use a 5 output module from marksmotorcycleparts.co.uk It allows 4 x5amp and 1x2amp outputs, with each output protected by a self repairing fuse. £30 from memory.
     
    austin likes this.
  14. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    Thanks for that. I'll have a shufty at Fergal's bike the next chance I get.

    Any idea what colours the wires are entering the connector?
     
  15. austin

    austin Well-Known Member

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    Here's how to tap to into the bus socket Switched power - The easy way Either use the new wire to directly power the accessories, as long as under 5amp total, or to trigger a relay. You then know the rest..
     
  16. Lutin

    Lutin Administrator Staff Member Forum Supporter

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    Brilliant! Thanks for that. :thumbsup:
     

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