675.cc • Triumph 675 Forum

Electrical (battery) drain on Indicator circuit.

Discussion in 'General' started by MattHarris, May 18, 2019.

  1. MattHarris

    MattHarris

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    Location: London, UK
    Hi everyone.
    I'm hoping someone can help me solve an electrical conundrum.
    I have a drain on my battery, and left for long enough the bike is no longer able to start.
    I've managed to figure out that the drain is on the indicator circuit by pulling fuses until the drain disappears.
    The picture on the fuse box shows that the indicators and the horn are on that circuit - BUT - if I unplug all the indicators and horn... the drain is still there.
    So I'm assuming there are other things on that circuit that could also be causing the drain. Does anyone happen to know what else runs on that circuit, or where to find a good electrical diagram?
    Thanks in advance!
     
  2. StMarks

    StMarks PTG

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    Do you have a Datatool Alarm on your bike.?
     
  3. MattHarris

    MattHarris

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    Nope. No alarms of any kind. At least not that I am aware of!
     
  4. paulb

    paulb

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    Location: welskpool powys
    Haynes manual for diagram.
     
  5. MattHarris

    MattHarris

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    After a bit more research and looking at wiring diagrams, it really seems that an alarm is the only possible cause of this - but unless I'm crazy - my bike doesn't have an alarm!
    Can anyone share any info on where I might find any kind of hidden alarm unit, or wiring? I can see that the alarm splices into the instrument cluster (which obviously makes sense) - but I'm at a bit of a loss for where to look to test wires/connections etc.
    There's certainly no kind of alarm unit underneath the seat, which is where I would expect to find it.
     
  6. paulb

    paulb

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    Location: welskpool powys
    My alarm is in my air box. No it does not affect the performance.
     
  7. 13 on bikes have immobiliser. Could it be that.
     
  8. MattHarris

    MattHarris

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    Location: London, UK
    Sorry, I should have said - it's an 07 bike.
     
  9. MattHarris

    MattHarris

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    ....wait... really???
     
  10. StMarks

    StMarks PTG

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    Location: HU15 2DS
    Have you tried looking where the "bypass plug" would closes the wiring loom (or a Datatool Alarm would fit), to see if cables have been taken from that point to some secreted location of a tracker or alarm or immobiliser.?
     
  11. MattHarris

    MattHarris

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    I figured this would be the best thing to do next, but I'm wondering if anyone can give me some guidance on where to find the "bypass plug" because I'm not sure where it would be?
     
  12. StMarks

    StMarks PTG

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    Location: HU15 2DS
    Under the rider's seat, to the rear of the battery.
     
  13. MattHarris

    MattHarris

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    Damn, that's kinda where I thought it would be, but there isn't anything there on my bike - only the wiring loom that goes to the rear lights.
    Don't suppose anyone is able to share a picture with me of what theirs looks like?
     
  14. StMarks

    StMarks PTG

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    Location: HU15 2DS
    8-))
    [​IMG]
     
  15. paulb

    paulb

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    Location: welskpool powys
    You will find it tucked behind the starter relay. Under the seat
     
  16. MattHarris

    MattHarris

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    Location: London, UK
    I was away from my bike for a bit, but managed to get back and take a look. Yes, found it! It was neatly tucked away in front of the battery, which was not where I was expecting! It all looks fine to me... nothing looks like it's been modified or anything, so I'm still at a bit of a loss to the cause of the drain.
     
  17. StMarks

    StMarks PTG

    12,617
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    Location: HU15 2DS
    Ok, so you're saying there's no tracker or similar tapped off the indicator circuit then.?
    I guess it's tracing by elimination (just as you already have done, to get this far)
    The horn is in a fairly vulnerable location, so the wiring in that area may be worth a look over.?
    I think I would start by unplugging the flasher relay & see if the draw of current still exists.
    Then the same with the handlebar switches.
    What year is your bike, if it's very early is the fuel pump fed from the indicator relay.?
     
  18. MattHarris

    MattHarris

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    Location: London, UK

    Yeah it doesn't seem like there is anything coming off that blocking plug, which confirms what I thought about there not being any kind of alarm or tracker spliced in.
    Yeah, I'll take another look at the horn, but I did measure the drain whilst I unplugged the horn and it didn't change. Although I only unplugged one of the two wires going to the horn... would that have made a difference? The 2nd wire was corroded on a bit and hard to get off so I didn't pull it off in the end... also potentially not a good sign I suppose.

    It's an 07, so yeah an early one. And I think you might be right about the fuel pump - if I pull the indicator relay fuse out and then turn the ignition on the fuel pump doesn't make any noise.
     
  19. StMarks

    StMarks PTG

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    Location: HU15 2DS
    So you'll probably have the same setup as my bike (an 06) where there is a harness adaption. However the fuel pump wouldn't/shouldn't prime unless the ignition circuit is live, and iirc your problem is a draw even with the ignition off.??
     
  20. MattHarris

    MattHarris

    Thread Starter

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    Location: London, UK
    Yeah the draw is there with the ignition off. Really making me scratch my head. I was certain it was gonna be related to my aftermarket indicators - but I unplugged them all and the draw is still there.
     

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