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    May 26, 2017 3:26 pm  #31

    dan_6776
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    Registered: January 17, 2013
    Posts: 653

    Re: Changing gear ratios...need input

    Did a quick search. To run a tach, I would need to install a tach driver module which runs about $100, then I would have to buy a tach. The module picks up signals from a couple of coils and then sends a signal to the tach. 
    Personally, the cost involved just isn't worth my consideration.

     

    May 26, 2017 4:57 pm  #32

    70XL
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    Registered: January 2, 2013
    Posts: 384

    Re: Changing gear ratios...need input

    It looks like this guy did it without using a tach adapter, he went to the PCM to get te tach signal. This way instead of the diagnostic port I mentioned earlier.
    https://www.fordf150.net/articles/idx.php/0/020/article/How-To-Install-a-Tachometer-in-a-Ford-F150.html

     

     

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