All throughout the Ford and Mercury Master Parts Catalog these harnesses are described as with or without tachometer. Everyone has determined that the Cougar alternator harness is the opposite of the Mustang with tachometer. In reality the issue is the presence of the ammeter. If a Cougar owner were to install the wiring harness for a Mustang with tachometer in his XR7, it would fry itself because the XR7 has an ammeter.
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Concours Alternator Harnesses(Click Here for More Information or to Order)  These harnesses are correct, direct replacement harnesses, and are the best on the market. 1972 and 1973 harnesses will be available in the near future.

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Economy Alternator Harnesses(Click Here for More Information or to Order)  These are the harnesses that are carried by Mustang shops. These fit multiple applications, but can be made to work . . .

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