What fuse powers the PCM Power Relay?

A 20A fuse in the engine compartment fuse box feeds circuit 37 (Yellow) to the PCM Power Relay; the PCM Power Diode connects via circuit 175 BK/Y.

What fuse and wire feed the fog lamp relay?

A 15A fuse feeds circuit 477 (LB/BK) to the Fog Lamp Relay, which is noted as Lightning only. Its output is circuit 478 (T/O) to the left (C113) and right (C114) fog lamps.

Where do the ground circuits on this page terminate?

Ground circuit 57 (BK) runs through splice S102 to ground G100; the diagram says 'See Grounds, Page 10-1'.

What connector goes to the Powertrain Control Module?

Connector C185 (pin 1) connects to the PCM, covered on pages 23-1, 24-1, 25-1 and 26-1.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ “Buckin Bronco”/ Photo supermotors.net/registry/media/1116064

Ford Bronco/F-150 Power Distribution Wiring Diagram - PCM Relay, ICM, Fog Lamps

Ford EVTM page 13-5: power distribution wiring diagram with PCM power relay and fog lamps

‹ ›

Power distribution wiring diagram showing the PCM power relay, ignition control module, fog lamp relay and related fog lamp circuits.

AI caption July 2017 · Photo 307 of 386

This scan is page 94 of a Ford wiring manual, section 13-5 'Power Distribution, Gasoline', showing power distribution for gasoline engines. It traces circuit 16 (R/LG) from splice S206 (page 13-3) through the engine compartment fuse box, a 20A fuse, connector C202, and splices S148 and S199 to the Ignition Control Module (ICM, connector C1021), Radio Capacitor (C1017), Ignition Coil (C1008), and Distributor (C178), all referenced to page 21-1. It also shows the engine compartment fuse box feeding the PCM Power Relay via a 20A fuse (circuit 37 Y) and the PCM Power Diode (circuit 175 BK/Y), with relay output circuit 361 R, and connector C185 to the Powertrain Control Module (PCM, pages 23-1, 24-1, 25-1, 26-1). A 15A fuse feeds circuit 477 LB/BK to the Fog Lamp Relay (Lightning only), which outputs circuit 478 T/O through splice S140 to the left fog lamp (C113) and right fog lamp (C114), page 86-1. Grounds run on circuit 57 BK through splice S102 to ground G100 (see grounds, page 10-1). Readers can identify wire circuit numbers, colors, fuse amperages, connector IDs, and cross-referenced manual pages.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What fuse powers the PCM Power Relay?: A 20A fuse in the engine compartment fuse box feeds circuit 37 (Yellow) to the PCM Power Relay; the PCM Power Diode connects via circuit 175 BK/Y.
What circuit feeds the Ignition Control Module and ignition coil?: Circuit 16 (R/LG) runs from S206 through the engine compartment fuse box (20A fuse), connector C202, and splices S148 and S199 to the ICM (C1021), ignition coil (C1008), radio capacitor (C1017), and distributor (C178).
What fuse and wire feed the fog lamp relay?: A 15A fuse feeds circuit 477 (LB/BK) to the Fog Lamp Relay, which is noted as Lightning only. Its output is circuit 478 (T/O) to the left (C113) and right (C114) fog lamps.
Where do the ground circuits on this page terminate?: Ground circuit 57 (BK) runs through splice S102 to ground G100; the diagram says 'See Grounds, Page 10-1'.
What connector goes to the Powertrain Control Module?: Connector C185 (pin 1) connects to the PCM, covered on pages 23-1, 24-1, 25-1 and 26-1.