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How-to Guide: Hook 42 Pin Harness Connector on 99-04 Mustang
You should see the large, square 42 pin wire harness connector in the corner of the engine – seen in the picture, if you want to diy install a tach adapter purpose on your 99-04 Mustang. At most, the 42 pin wire harness connector located in the corner of the engine bay where the passenger fender meets the firewall of your Mustang (other Ford car and trucks maybe different 42 pin connector location). Pop the plastic cover off th… 0, 9.07, 0, 5, engine: 3 location: 1 number: 1