Ford TFI Ignition Module Wiring Schematic - Black Distributor Mounted (EEC-IV)

This is a wiring schematic for the black distributor-mounted TFI (Thick Film Ignition) ignition module used on Ford EEC-IV fuel-injected vehicles. The diagram shows the six-pin TFI module connector on the left and traces each circuit to its destination: EEC pin 4 (IDM, Ignition Diagnostic Monitor), the tachometer feed, EEC pin 16 (IGN GND, ignition ground), EEC pin 36 (SPOUT, spark output), and EEC pin 56 (PIP, Profile Ignition Pickup). It also shows the SPOUT connector (an in-line jumper) in the SPOUT circuit, aluminum shielding around the PIP/SPOUT/IGN GND wiring, and the power supply path from the battery through the ignition relay and the ignition switch RUN circuit to the module. An ignition coil symbol is drawn at the upper right connected to the IDM/tach circuit. The diagram is credited "Copyright 2003 RJM Injection Tech, www.fordfuelinjection.com." A reader can learn which EEC-IV computer pins connect to each TFI module terminal, where the SPOUT jumper sits in the harness, which wires are shielded, and how the module receives switched power — useful for diagnosing no-spark, tach, or timing-related TFI problems on Fords with the black distributor-mounted module, such as the uploader's 1990 Bronco.