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Thread: Tacho wiring [AE71 20v w/bosch coils]

  1. #1
    pedro sanchez wannabee Domestic Engineer Dom-AE71's Avatar
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    Default Tacho wiring [AE71 20v w/bosch coils]

    i want to hook up the tacho in my ae71, i can work out all the wiring and stuff easily but what do i hook the sender up to to get a tacho signal? im using 4 bosch coil packs and the internals of the standard dizzy for crank angle sensor. im running a microtech LTX-8

    thanks

    thanks

  2. #2
    Junior Member Grease Monkey omy's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    On the LTX-8 there is a tacho outup on the frist loom it should be blue and white.


  3. #3
    Gobble, Gobble! Automotive Encyclopaedia mrshin's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Easiest/Nastiest way is to link all the coils together with diodes and use that to operate the original tacho.

  4. #4
    pedro sanchez wannabee Domestic Engineer Dom-AE71's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Quote Originally Posted by omy
    On the LTX-8 there is a tacho outup on the frist loom it should be blue and white.
    champion!

    thankyou

  5. #5
    Chookhouse Chooning Automotive Encyclopaedia Hen's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    That tacho output will be 5V square wave. You will need a converter circuit to make it work with the AE71 dash. Search for ZE into AE86, the required circuit should turn up.

    However Shinny's idea is just as easy and gives a less sluggish tacho in my opinion.

    Hen

  6. #6
    pedro sanchez wannabee Domestic Engineer Dom-AE71's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Quote Originally Posted by mrshin
    Easiest/Nastiest way is to link all the coils together with diodes and use that to operate the original tacho.

    how do i do that? i dont even know wat diodes are im a gump when it comes to auto electrics

  7. #7
    Junior Member 1st year Apprentice
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    http://www.toymods.net/forums/showth...gze+ae86+tacho
    i think that is the one.

    I have the same setup Dom and am about to try one of these options to get my tacho working. will see how it goes!

  8. #8
    Fava beans and chianti Backyard Mechanic AE86slut's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Dom, I've still got my one made by Sideshow that I used on my 20V/LTX-8 setup. Come pick it up whenever.
    I am not a doctor, or a mechanic...
    A.K.A Otomoto
    All new - Fart!
    Quote Originally Posted by Vios-GT_07
    it was 10,000 kms b4 it saw the red-line.. but even then i seldom push it that hard unless i have to prove a point i.e. competition

  9. #9
    pedro sanchez wannabee Domestic Engineer Dom-AE71's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Quote Originally Posted by AE86slut
    Dom, I've still got my one made by Sideshow that I used on my 20V/LTX-8 setup. Come pick it up whenever.

    i love you jeremey

    i serouisly do

    dammit i want my horn working!

  10. #10
    Fava beans and chianti Backyard Mechanic AE86slut's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Quote Originally Posted by Dom-AE71
    i love you jeremey

    i serouisly do

    dammit i want my horn working!
    We'll sort out a method of... errr... payment when you come and get it.


    I might even fix your horn for you too, seeing as you're too retarded to do anything yourself

    This would, of course, carry an additional fee though. I'd brace myself if I was you - I'm toey-er than a Roman sandal!
    I am not a doctor, or a mechanic...
    A.K.A Otomoto
    All new - Fart!
    Quote Originally Posted by Vios-GT_07
    it was 10,000 kms b4 it saw the red-line.. but even then i seldom push it that hard unless i have to prove a point i.e. competition

  11. #11
    Junior Member 1st year Apprentice
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    jeremy,

    would you be able to perhaps take a photo, or give me some information on the circuit you have there.

    is it similar to the circuit outlined in that other thread?
    or linking all four coil wires via diodes?'

    thanks.

    oh and how accurate was it?

  12. #12
    Fava beans and chianti Backyard Mechanic AE86slut's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    Quote Originally Posted by deltathing
    jeremy,

    would you be able to perhaps take a photo, or give me some information on the circuit you have there.

    is it similar to the circuit outlined in that other thread?
    or linking all four coil wires via diodes?'

    thanks.

    oh and how accurate was it?
    Mr Thing,

    I wouldn't have a clue about it, apart from the fact that it looks just like a relay.

    Anyway, as far as I know it was very accurate.
    I am not a doctor, or a mechanic...
    A.K.A Otomoto
    All new - Fart!
    Quote Originally Posted by Vios-GT_07
    it was 10,000 kms b4 it saw the red-line.. but even then i seldom push it that hard unless i have to prove a point i.e. competition

  13. #13
    pedro sanchez wannabee Domestic Engineer Dom-AE71's Avatar
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    Default Re: Tacho wiring [AE71 20v w/bosch coils]

    haha jeezzz mate i think i got the horn issue sorted

    its the ONLY thing holding me back form rego at this point in time

    anyways ill call ya once i finish wiring and shit. i gotta go to bunnings to get some PVC pipe for a bit of cold air induction bro hahahaha

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