What fuse powers circuit 298 (P/O) in this diagram?

Fuse E, a 15A fuse in the engine compartment fuse box, fed by circuit 687 (GY/Y) from splice S217 (page 13-3) through connector C202.

What components does circuit 298 P/O feed?

From splice S105 it feeds the Daytime Running Lamps (DRL) module via C177, the heated oxygen sensor (HO2S) via C1025, the speed control servo/amplifier via C216, and depending on transmission: the backup lamp switch (C166, manual), park/neutral position switch (C127, C6), or manual lever position (MLP) sensor (C1012, E4OD or 4R70W). A trailer tow branch feeds the trailer battery charge relay via C202, C205, and C149 (all except Bronco).

What does the Bronco-only branch power?

Circuit 601 (LB/PK) runs from S105 to the 4WABS control module via connector C119 and to 4WABS relay #1 in the trailer relay box (page 42-3).

What wire colors are used in this power distribution circuit?

Circuit 687 is GY/Y, circuit 298 is P/O (pink/orange), and circuit 601 is LB/PK (light blue/pink).

Which engines apply to the C1003 branch differences?

One branch applies to 4.3L, 5.0L, or 5.8L under 8500 lbs & Lightning; the asterisked branch (C1003*) applies to 5.8L over 8500 lbs and 7.5L engines.

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1994 Ford Bronco/F-Series Power Distribution Wiring Diagram - Fuse E Circuit 298

Ford EVTM page 13-4: power distribution wiring diagram for DRL, sensors and transmission

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Power distribution wiring diagram routing power to daytime running lamps, oxygen sensor, neutral switches and 4WABS control module.

AI caption July 2017 · Photo 300 of 386

This document is a 1994 Ford power distribution wiring diagram (page 13-4, "Power Distribution, Gasoline") showing how circuit 687 (GY/Y) from splice S217 (page 13-3) feeds fuse E (15A) in the engine compartment fuse box, which then powers circuit 298 (P/O) through splice S105. From S105, circuit 298 branches to: connectors C1003/C1003* (with a not-used branch, varying by engine — 4.3L/5.0L/5.8L under 8500 lbs & Lightning vs. 5.8L over 8500 lbs/7.5L), the Daytime Running Lamps (DRL) module via C177 (page 97-1), connector C103 and splice S134, the heated oxygen sensor (HO2S) via C1025 (pages 23-3, 24-6, 25-4, 26-3), the speed control servo/amplifier via C216 (page 31-1), and transmission-specific switches: backup lamp switch (C166, manual transmission), park/neutral position switch (C127, C6 transmission), or MLP sensor (C1012, E4OD or 4R70W). A Bronco-only branch (circuit 601 LB/PK) feeds the 4WABS control module (C119) and 4WABS relay #1 (page 42-3). A trailer tow branch (all except Bronco) runs through C202/C205/C149 to the trailer battery charge relay (page 95-1) in the trailer relay box. Useful for tracing circuit 298 power feeds and fuse E on 1994 Ford trucks.

This document covers 1994, which may differ from this 1996 Ford Bronco.

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Frequently asked questions

What fuse powers circuit 298 (P/O) in this diagram?: Fuse E, a 15A fuse in the engine compartment fuse box, fed by circuit 687 (GY/Y) from splice S217 (page 13-3) through connector C202.
What components does circuit 298 P/O feed?: From splice S105 it feeds the Daytime Running Lamps (DRL) module via C177, the heated oxygen sensor (HO2S) via C1025, the speed control servo/amplifier via C216, and depending on transmission: the backup lamp switch (C166, manual), park/neutral position switch (C127, C6), or manual lever position (MLP) sensor (C1012, E4OD or 4R70W). A trailer tow branch feeds the trailer battery charge relay via C202, C205, and C149 (all except Bronco).
What does the Bronco-only branch power?: Circuit 601 (LB/PK) runs from S105 to the 4WABS control module via connector C119 and to 4WABS relay #1 in the trailer relay box (page 42-3).
What wire colors are used in this power distribution circuit?: Circuit 687 is GY/Y, circuit 298 is P/O (pink/orange), and circuit 601 is LB/PK (light blue/pink).
Which engines apply to the C1003 branch differences?: One branch applies to 4.3L, 5.0L, or 5.8L under 8500 lbs & Lightning; the asterisked branch (C1003*) applies to 5.8L over 8500 lbs and 7.5L engines.