[navylife59]

RPM signal circuit
Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor. Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is input into TERMINAL NE+.

The Tach signal is fed to the black wire at pin 9 on the DLC3 connector aka CAN port aka OBDII port.