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Thread: Tacho different in soft dash to 85 model

  1. 7th December 2014, 12:41 PM #1
    theg
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    Tacho different in soft dash to 85 model

    Hi All
    I have a 94 soft dash rangie im about to fit a injected 5l holden into .
    Ive recently bought an 85 with the full conversion including engine already fitted .
    I will be doing full engine swap .
    My question relates to the tachos in these two models as they are different .
    The conversion has been professionally done in the 85 including mods required to have operational tacho so im not sure with these tachos being different if I will need a different sensor or something or modification of some form for the sensor which will be driving the later model tach .
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  2. 7th December 2014, 12:54 PM #2
    Dougal
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    The 85 has a tacho driven off the alternator. So engine choice doesn't matter much.
    The 94 soft-dash have the same instruments as a 94-96 Honda Accord. They are still alternator driven (mine is 300tdi), but I haven't chased through the wiring.
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  3. 7th December 2014, 01:02 PM #3
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    Vern
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    Alt wire in a soft dash is white with brown trace from memory, has an inline resistor in it I think
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  4. 7th December 2014, 01:03 PM #4
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    Vern
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    Sorry tach wire not alt
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  5. 7th December 2014, 01:48 PM #5
    theg
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    Guys thanks for your help here .
    Vern does the tach wire you mention simply feed from alternator .
    Any idea why a resistor is inline .
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  6. 7th December 2014, 02:59 PM #6
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    Vern
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    Yes it does, resistor is to reduce the voltage at the dash/gauge iirc, runs on 6volts or something like that from memory
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