1998 Chevrolet C6500 (topkick)

Discussion in 'Chevy Truck Forum' started by batty1214, Nov 7, 2009.

  1. batty1214

    batty1214 Senior Member

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    I need all ya'lls help again...... this time I am looking for the Wiring diagrahm for a 1998 Chevrolet topkick..... I am needing to know where the speed sensor for the speedometer is at, as well as the electrical input for the Tachometer...... all the gauges work, except these two..... To my knowledge, they have never worked....... I would worry about getting them working except MSHA is wanting them to, and what MSHA wants, they get......

    I have installed a new gauge cluster with no change............

    Oh, It has the Caterpillar diesel and spicer 7 speed transmission
     
  2. Steve g.

    Steve g. Senior Member

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    Did you look on the rear end already? That's where it is on my truck.
     
  3. batty1214

    batty1214 Senior Member

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    yeah, not finding it.......
     
  4. leolkfrm

    leolkfrm Full Member

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    top of the tranny behind the dizzy, yo have to get at it from underneath
     
  5. batty1214

    batty1214 Senior Member

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    This truck doesnt have a dizzy Leo, Its a Caterpillar 3116..... But, I'll bet its still in that area somewhere...... where would the Tachometer run off of?
     
  6. leolkfrm

    leolkfrm Full Member

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    sorry thought it was an 8.1 gas!
     

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