What are the wire colors on the TFI module connector for 4.9L, 5.0L and 5.8L engines?

Circuit 259 (BK/O - black/orange), 11 (DG/Y - dark green/yellow), 16 (R/LG - red/light green), 32 (R/LB - red/light blue), 324 (Y/LG - yellow/light green), and 349 (DB - dark blue).

How does the 7.5L TFI module connector differ from the smaller engines?

On the 7.5L, the top pin is circuit 570 (BK/W - black/white) instead of circuit 259 (BK/O). The remaining pins are the same: 11 (DG/Y), 16 (R/LG), 32 (R/LB), 324 (Y/LG), and 349 (DB).

What circuits connect to the Trailer-Marker Lamps Relay?

Circuits 37 (Y - yellow), 667 (W/R - white/red), 14 (BR - brown), and 57 (BK - black).

What circuits connect to the TECA Power Relay?

Circuits 37 (Y - yellow), 361 (R - red), 16 (R/LG - red/light green), and 57 (BK - black).

Which engines does this connector pinout page cover?

It shows TFI module connector faces for the 4.9L, 5.0L, 5.8L engines (one diagram) and the 7.5L engine (a separate diagram).

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Ford TFI Module Connector Pinout - 4.9L 5.0L 5.8L 7.5L Wiring & Relay Diagrams

Ford TFI module, trailer-marker lamp relay and TECA power relay connector pinout charts

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Connector face/pinout chart from a Ford EVTM (page 150-19): TFI ignition module pins for 4.9L/5.0L/5.8L and 7.5L engines, plus trailer-marker lamp and TECA power relay pinouts with wire-circuit colors.

Part of 1987-1991 Ford Bronco Wiring Diagrams

AI caption November 2010 · Photo 249 of 1787

This is page 150-19, 'Connector Faces/Pinout Charts,' from a Ford wiring reference manual, showing four connector face diagrams with circuit numbers and wire color codes. Two diagrams cover the TFI (Thick Film Ignition) module connector: one for 4.9L, 5.0L and 5.8L engines (circuits 259 BK/O, 11 DG/Y, 16 R/LG, 32 R/LB, 324 Y/LG, 349 DB) and one for the 7.5L engine, which is identical except that circuit 570 (BK/W) replaces circuit 259 (BK/O) at the top pin. Two additional diagrams show relay connector faces: the Trailer-Marker Lamps Relay (circuits 37 Y, 667 W/R, 14 BR, 57 BK) and the TECA Power Relay (circuits 37 Y, 361 R, 16 R/LG, 57 BK). A partial 'PIN NUMBER' column (1-15) from an adjacent page is visible at the right edge. A reader can use this page to identify TFI module connector wiring by circuit number and wire color for diagnosing ignition problems, and to identify the wiring at the trailer-marker lamps and TECA power relays. The page itself is undated; it was uploaded for a 1990 Ford Bronco.

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Frequently asked questions

What are the wire colors on the TFI module connector for 4.9L, 5.0L and 5.8L engines?: Circuit 259 (BK/O - black/orange), 11 (DG/Y - dark green/yellow), 16 (R/LG - red/light green), 32 (R/LB - red/light blue), 324 (Y/LG - yellow/light green), and 349 (DB - dark blue).
How does the 7.5L TFI module connector differ from the smaller engines?: On the 7.5L, the top pin is circuit 570 (BK/W - black/white) instead of circuit 259 (BK/O). The remaining pins are the same: 11 (DG/Y), 16 (R/LG), 32 (R/LB), 324 (Y/LG), and 349 (DB).
What circuits connect to the Trailer-Marker Lamps Relay?: Circuits 37 (Y - yellow), 667 (W/R - white/red), 14 (BR - brown), and 57 (BK - black).
What circuits connect to the TECA Power Relay?: Circuits 37 (Y - yellow), 361 (R - red), 16 (R/LG - red/light green), and 57 (BK - black).
Which engines does this connector pinout page cover?: It shows TFI module connector faces for the 4.9L, 5.0L, 5.8L engines (one diagram) and the 7.5L engine (a separate diagram).