Question about 1988 Jeep Wrangler

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Need schematic of tachometer; housing says MY89 6 cyl. 56002915 and 1 211 009 688A I can't find wiring diagram so ?I can connect to another engine. Any one have diagram? Thanks, Dave Pueblo, CO

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  • dave131 Feb 17, 2009

    Numbers are on housing; didn't know which ones important so I added them all. Tach is a 56002915.


  • dave131 Feb 17, 2009

    Oh no... even a 1988 Wrangler tach is not simple. I paid $35 for it and it's a nice looking unit. Thought I'd try it in a 1966 Ford V8 dump truck. Not expensive, just bummed to spend more money. Local junk yards are NOT helpful even tho filled to overflowing with old (some working) stuff.



    Pueblo, CO

  • yadayada
    yadayada May 11, 2010

    what in the heck are the numbers ll about????????



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Tachs are really not that expensive... problem with the tach from your jeep is that it's not connected to the ign coil in a traditional sense, instead, it is connected to the engine control module, which may contain part of what would normally be found inside a seperate unit, making your tach, basically a volt meter with a different scale on it.
Before taking it apart and rendering it useless for anything, I'd get a tach made for use on the vehicle you intend to put it in.

Posted on Feb 17, 2009

  • Richard Scordino Feb 17, 2009

    Want to go simple? attach two wires to the tach terminals attach one to ground and lightly touch the dist side of the coil primary terminal. if the tach tries to bounce backwards, reverse the wires and it should work!!

  • Richard Scordino Feb 17, 2009

    PS... even if it works, it will not read correctly because it's calibrated for a 6cyl!



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