Where is ground G101 on a Ford Bronco/F-Series?

The diagram highlights G101 on the left (driver-oriented right in the illustration) side of the engine compartment, near the front of the engine bay, along with nearby grounds G103 and G100 (at connector C103).

What connector numbers are used for the headlamps and park/turn lamps?

C1034 is the right headlamp, C1033 the left headlamp, C1032 the right front park/turn lamp, and C1031 the left front park/turn lamp.

Where is the engine compartment fuse box and what is inside it?

The engine compartment fuse box is shown on the left side of the engine bay (upper right of the diagram), and the trailer relay box is located inside it.

What connectors serve the Integral Alternator Regulator (IAR) and A/C clutch?

C153 and C154 connect to the Integral Alternator Regulator (IAR), and C163 connects to the A/C clutch field coil. An ignition suppression resistor and A/C clutch resistor diode location is also identified.

Which components on this diagram are Bronco-specific?

The brake warning resistor/diode assembly location and connector C121 for the 4WABS hydraulic unit are labeled as Bronco-specific.

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Ford Bronco/F-Series G101 PCM Ground & Engine Bay Connector Location Diagram

Underhood electrical component location diagram for Bronco engine compartment with labeled connectors and grounds

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Engine-compartment component location schematic identifying connectors, grounds, sensors, lamps and modules for a Bronco series.

AI caption March 2011 · Photo 942 of 2216

This document is a Ford factory component location illustration (page 5 of 24, drawing FPS-12129-94) for the Bronco and F-Series trucks, showing the front of the engine compartment viewed from above. It identifies the physical locations of numerous electrical connectors, grounds, and components, including grounds G101 (highlighted by the uploader as the PCM ground), G103, and G100, and connectors C168 (blower motor), C139, C110, C103, C121 (4WABS hydraulic unit, Bronco), C153/C154 (Integral Alternator Regulator), C163 (A/C clutch field coil), and C177 (Daytime Running Lamps module and its jumper for non-DRL trucks). Lighting connectors shown include C1031/C1032 front park/turn lamps, C1033/C1034 headlamps, and C1052/C1053 and C1054/C1055 side marker lamps, plus C1005/C1006 low and high pitch horns and C1030 windshield washer pump motor. Also located are the right and left crash sensors, the engine compartment fuse box (with trailer relay box inside), the Bronco brake warning resistor/diode assembly, and the ignition suppression resistor and A/C clutch resistor diode. A note states the illustration and grid are not to be used for reporting vehicle repair locations. This page helps a reader physically find grounds and connectors when diagnosing wiring problems.

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Frequently asked questions

Where is ground G101 on a Ford Bronco/F-Series?: The diagram highlights G101 on the left (driver-oriented right in the illustration) side of the engine compartment, near the front of the engine bay, along with nearby grounds G103 and G100 (at connector C103).
What connector numbers are used for the headlamps and park/turn lamps?: C1034 is the right headlamp, C1033 the left headlamp, C1032 the right front park/turn lamp, and C1031 the left front park/turn lamp.
Where is the engine compartment fuse box and what is inside it?: The engine compartment fuse box is shown on the left side of the engine bay (upper right of the diagram), and the trailer relay box is located inside it.
What connectors serve the Integral Alternator Regulator (IAR) and A/C clutch?: C153 and C154 connect to the Integral Alternator Regulator (IAR), and C163 connects to the A/C clutch field coil. An ignition suppression resistor and A/C clutch resistor diode location is also identified.
Which components on this diagram are Bronco-specific?: The brake warning resistor/diode assembly location and connector C121 for the 4WABS hydraulic unit are labeled as Bronco-specific.