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  1. C

    Tachometer Install

    Tach is working now. See previous post.
  2. C

    Tachometer Install

    Sorry it’s a 2005 Mercury 90 hp 4 stroke.
  3. C

    Tachometer Install

    No it’s a replacement. It’s for a four stroke. There is a tach module in the engine. I don’t understand why it has that or the purpose for it? The tach wire was connected to it. I also replaced the module with a new one. Tested the current from the module. It read 1 volt. The wire coming from...
  4. C

    Tachometer Install

    I just made a new dash and installed new gauges. I have a Trophy CC1703 Mercury 90 four stroke. I’m at this point don’t understand why the tach is not reading. The sending wire is good and I tested it with a multimeter set to AC. The meter response to the change in the motor’s RPM. I discovered...
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