Dashboard wire colors on F650GS Twin - BMW F800 Riders Forum & Registry



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  1. #1
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    Virgilio
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    My bike is a 2009 F650GS Twin. Can anyone tell me what is the wire color scheme in the dashboard? I have seen references to the models before 2008 however in my bike the dashboard wire colors are different:
    Brawn,
    Green,
    Red,
    Black/white,
    Brawn/white.
    I am particularly interested in the tachometer signal wire?
    Manny thanks

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  3. #2
    WildWilly's Avatar
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    Can't help you with the wire colors but those who can will jump in.
    2013 F800GT Graphite Metallic
    Not a 2nd childhood, still in the 1st 

  4. #3
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    Brown is ground (always is for BMW).

    Red is +12 Volts from battery.

    The green/white wire goes to the ZFE and alarm control unit.

    The remaining two wires are the CANbus.

    There is no tach signal per se. I suspect that the Kombi gets engine speed info over the CANbus from the ECU which monitors the camshaft position sensor.

    Sent from my SM-T813 using Tapatalk

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  6. #4
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    Attached is a circuit wire diagram for the F650GS copied from the Haynes service manual for the BMW F800 & F650 Twins. Hopefully this will help. Since the writing is so small you may need to download the photo and enlarge it on your computer. The instrument cluster wiring is located near the lower left corner of the diagram.
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    Richard - Current bikes: 2016 BMW R1200RS, 2018 16.6 kWh Zero S, 2011 Royal Enfield Bullet 500 Classic, 2009 BMW F650GS, 2005 Triumph T-100 Bonneville, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior. 

  7. #5
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    Virgilio
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    Hi
    Thanks. The intention is to install the Healtech GIpro X-type G2 gear indicator. (I know that some colleagues do not think the gear indicator is necessary but I like the idea and I already have the unit. Installing it – correctly, off course - doesn't do any harm!)
    According to the manufacturer, one of the wires will be connected to one of 3 possible sources:
    a) The signal wire of the crankshaft sensor (also called Pickup coil or Ignition Pulse Generator). The Crankshaft sensor is inside the crankcase, usually near the Alternator. It has two wires.
    b) The tacho signal (rpm counter) wire, anywhere between the dashboard connector and the ECU box.
    c) The ignition coil signal wire, anywhere between the ignition control unit and the coil input terminal.
    I thought the tacho signal was the simplest one but it seems that it is also difficult. I think that the better is to call Healtech technical assistance and ask how to proceed on my specific machine.
    Thanks a lot for the help.

  8. #6
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    Hi. Please see my answer to bmwroadsterca. Thank you.

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