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1st Gen. Ram - All Topics Discussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.

need some tach help

   
Old Nov 27, 2009 | 11:45 AM
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need some tach help
i got a 93 factory tach and need to find the wire to read rpm in my 91 non ic.
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Old Nov 27, 2009 | 01:53 PM
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Won't work, there is no such wire except on '92 and '93 trucks.
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Old Nov 27, 2009 | 03:33 PM
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than how do people put tachs an 89,90,91thucks?
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Old Nov 27, 2009 | 03:47 PM
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Autometer makes a clamp-on alternator tach. Isspro makes a tach with a sensor an magnets that you glue to the damper. Either setup works.
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Old Nov 27, 2009 | 07:20 PM
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Do not put a 12 volt RPM signal on that factory tach. The Dodge signal is only 5 volts. You would most likely blow that tach.
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Old Nov 27, 2009 | 07:37 PM
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what years did factory tachs come on?
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Old Nov 27, 2009 | 09:40 PM
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They didn't, they were a Mopar Performance accessory you could have dealer installed.
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