Reply to "Tachometer"

jon3613Member

Dennis,
The tach can be tested out of the dash and that might be the best way to determine what is the problem.
This weekend I will check the wire colors on my 1972 and let you know what to do.
Basically there should be a +12 Volt connection that would be "on" when the ignition switch is on. A ground connection is also required, usually black lead. Then there is the connection that measures the engine speed, that connection needs high voltage pulses that are generated at the ignition coil. The connection to the coil has to be to the side with the points. This is assuming stock ignition as you said you have.
These three connections are the basics and should make the tach work. You can make all of these connections near the coil with temporary leads to test.
Monday, at the latest, I will post the colors of the proper connections (I don't drive my Pantera to work) or if there are other wires that must be connected for operation.

11/4/0510:01 AM

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