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Thread: Speedo lights not working

  1. 22nd June 2015, 08:19 PM #1
    copba
    copba is offline Master Supporter
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    Speedo lights not working

    G'day all,


    Hopefully someone can help.

    The speedo lights have stopped working in my TD5 Defender, the LHS one stopped a few weeks ago and now the other side has stopped too. I've just changed both the bulbs, presuming that they've blown, but they still don't work. The old bulbs were a little cloudy, so can't tell.

    All other dash lights are fine, the headlights are wired through a Drivesafe upgrade kit, and all work fine.

    Any ideas on what to try next?
    Is there a separate fuse for speedo lights?

    I've searched the forum and all posts I could find talk about upgrades to LED.

    I've just started a new job and work till after 6 at night, so the lights are getting a bit of workout; good thing Defenders are noisy as now I have to guess my speed for the drive home based on the noises
    Surprisingly accurate though


    Cheers,
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  2. 23rd June 2015, 10:48 PM #2
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    robh
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    I have no experience with the TD5 but I'd be guessing a bad earth. If you have a volt meter, check the voltage at the positive and negative side of the bulb socket with respect to a good earth (chassis) connection.
    Rob
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  3. 24th June 2015, 09:45 AM #3
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    JDNSW
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    If it is the same as the earlier 110, the earths for the gauges, including the lights, are via a stack of tags under one of the instrument mount nuts. If this is loose, one or more of the earths is likely to be ineffective.

    John
    John

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  4. 24th June 2015, 10:19 AM #4
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    Dervish
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    I've never played with a TD5 speedo before, but this diagram should help. It's either going to be pin 3 or 4 of this connector. It seems to say that the earth is broken to switch the lights off - I can't imagine why they'd wire it like that given the circuit it's on but that should at least give you a starting point.
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  5. 24th June 2015, 07:36 PM #5
    copba
    copba is offline Master Supporter
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    Thanks for the ideas guys, and thanks very much for the circuit diagram Dervish
    I'll have to have more of a play on the weekend with a multi meter.

    I'm sure it's something simple:

    Cheers
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