I have a 5in autometer monster tach with black face. Its model #3905 which comes with a shift light and memory recall. Bought this from a friend who used it for a few weeks and went with another style. This tach retails for $170 so i was thinking $140.

 

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I'm, not familiar with this tach... Is is a straight replacement using the existing wiring harness, or does it require re-wiring into the ECU or what? I assume that it does NOT replace the OEM tach since that unit has several warning/indicator lights and this one... does not.

 

not a direct replacement.....you wire this into the ecu which is very easy.

 

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