Wiring Tachometer help

Discussion in 'Power it up with Electronics' started by Jigalode, Mar 3, 2011.

  1. Jigalode

    Jigalode Stay On Point

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    Hey guys,
    Just bought a set of Amega Teleflex gauges for my boat to replace the old weathered down ones (it was difficult to make out the numbers) My speedometer and fuel gauges installed easily but the new tachometer has different wiring than my current one. The old one uses a harness. How can I wire the new gauge?

    Here are some pictures of the old and new one:

    Old:
    [​IMG]

    New:
    [​IMG]

    & since were on the topic, the gauges came in a bundle of 4, so I have a new battery voltage gauge of the same "Teleflex Amega" style, if anyone is interested.

    Thanks.
     
  2. Brett

    Brett > PRO STAFF <

    Time to break out the wire cutters and crimps.
    Then you'll need the color codes for your wiring harness
    to determine which wire goes where.


    http://www.maxrules.com/wireindex.html
     

  3. Jigalode

    Jigalode Stay On Point

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    none of those seem to match my wiring schematic. i've been searching the internet for a proper diagram.

    my engine model number is j50plssm. are there any other resources available?
     
  4. Brett

    Brett > PRO STAFF <

    [​IMG]

    Knowing you have an OMC product, and looking at the harness image provided
    it appears to match the johnson colors in the maxrules link.

    Looks like the loose red wire is the gauge light
    loose green is probably your ground
    but black is the usual color for the ground
    Purple is the ignition/12v feed and grey is the tach send.
    Seems to be all you need.

    [​IMG]
     
  5. Jigalode

    Jigalode Stay On Point

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    thanks brett i was actually looking at the wrong link for the wiring diagrams. I did not see the color codes link. Appreciate the help.
     
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