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Monitoring parameters requires the end user to tap into the ECM speed (blue) and tach (yellow) signal using the wires provided with the kit. Using the provided T-taps, locate the proper signal output and crimp both wires onto the main cable harness. The '06 CT9A Evo that we installed the Race Monitor on required us to tap into pin 45 for tach output and pinout location 80 for the speed sensor. Another option for those who own an OBD-II vehicle is to purchase the optional communication cable that simply plugs into the OBD port to detect both engine speed and tach signal from the connector.