What ground circuit color is used on the 1994 Bronco/F-Series grounds diagram?

All circuits are 57 BK (black) unless otherwise noted; the main ground run to G100 is circuit 274 BK/W.

Where is ground G100 located per this diagram?

G100 is referenced to component view 151-3 F5, reached via circuit 274 BK/W through connectors C205 (151-2 A6) and C202 (151-2 A7), fed from splice S103.

Which connector grounds the left headlamp on a 1994 Bronco?

The left headlamp grounds through connector C1033; see pages 85-1 and 97-1.

What relays in the engine compartment fuse box are grounded on this page?

The fog lamps relay (Lightning, page 86-1), the PCM power relay (pages 23-1, 24-1, 25-1, 26-1), and the trailer/marker lamps relay with trailer tow (page 95-1).

What wire circuit grounds the ambient temperature sensor?

The ambient temperature sensor (connector C131, page 102-1) uses circuit 767 LB/O (light blue/orange).

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1994 Ford Bronco/F-Series EVTM Page 10-1 Grounds Wiring Diagram (Gasoline)

1994 Bronco/F-Series Grounds 10-1 wiring diagram with engine compartment fuse box and trailer relays

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1994 Ford Bronco/F-Series grounds wiring page 10-1 mapping ground points G100/S102/S103 for lamps, RABS valve assembly, wiper/washer motors and trailer relay box; all circuits 57 BK.

AI caption June 2016 · Photo 280 of 413

This document is page 10-1 ("Grounds") from the 1994 Ford Bronco/F-Series Electrical and Vacuum Troubleshooting Manual (EVTM), covering gasoline engine models. It is a wiring diagram showing the ground circuit distribution for front-end and engine-compartment components. A note states all circuits are 57 BK (black) unless otherwise noted. Grounded components shown include the engine compartment lamp (C1035/C173), brake fluid level switch (C170), windshield wiper motor (C152), fog lamps relay (Lightning), PCM power relay, trailer/marker lamps relay, trailer backup lamps relay (F-Series), trailer battery charge relay (Bronco), RABS valve assembly (Bronco, C158), ambient temperature sensor (C131, wire 767 LB/O), windshield washer pump motor (C1030), left headlamp (C1033), left fog lamp (C113, Lightning), left front park/turn lamp (C1031), and left front side marker lamps (C1054/C1055). Circuits converge at splices S102, S103, and S104 and terminate at ground point G100 (component location 151-3 F5) via circuit 274 BK/W through connectors C205 and C202. Page cross-references are given for each component, plus links from C101/C103 on page 10-5 and S107 on page 10-16. A reader can trace ground paths, connector IDs, wire circuit numbers/colors, and component-view page references.

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Frequently asked questions

What ground circuit color is used on the 1994 Bronco/F-Series grounds diagram?: All circuits are 57 BK (black) unless otherwise noted; the main ground run to G100 is circuit 274 BK/W.
Where is ground G100 located per this diagram?: G100 is referenced to component view 151-3 F5, reached via circuit 274 BK/W through connectors C205 (151-2 A6) and C202 (151-2 A7), fed from splice S103.
Which connector grounds the left headlamp on a 1994 Bronco?: The left headlamp grounds through connector C1033; see pages 85-1 and 97-1.
What relays in the engine compartment fuse box are grounded on this page?: The fog lamps relay (Lightning, page 86-1), the PCM power relay (pages 23-1, 24-1, 25-1, 26-1), and the trailer/marker lamps relay with trailer tow (page 95-1).
What wire circuit grounds the ambient temperature sensor?: The ambient temperature sensor (connector C131, page 102-1) uses circuit 767 LB/O (light blue/orange).