ECM plugs and their FSM connector numbers: A = B134, B = B135, C = B136, D = B137 (FSM wiring WI-106 to WI-118, EN(STi)-18 to 22). On our TE 1-1376430-0 header (J1) the units are D = pins 1-31, C = 32-66, B = 67-101, A = 102-135.
Crank: a 2-wire VR sensor, signal (+) on B10, signal (-) on B22, shield on B31 to ground at the ECU end only. rusEFI has a VR "invert" setting; check the polarity with the trigger logger.
Cams: 3-wire Hall sensors (WI-114), 12 V from the harness, open collector. They need a pull-up, not a VR input.
Knock: one sensor (C25, shield C33).
Fuel pump: the controller command on B26 is a 5 V PWM signal. Brake 1 and clutch switches sit at 12 V and drop to 0 V when pressed; the neutral and power-steering switches close to ground.
Full pin table: rusefi-sti-2004/documents/oem-ecm-pinout-2004-sti.csv; project: rusefi-sti-2004.