What components are grounded through splice S205 on a 1994 Bronco/F-Series?

The rear window defrost control (C278), remote keyless entry module (C240), radio (C257/*C211), blower motor switch (C260), fuel tank selector switch (C268), engine speed sensor (C184, diesel only), and master tailgate window switch (C274).

What wire color and circuit number is the engine speed sensor ground?

Circuit 644, dark green (DG), passing through connectors C184, C202 (151-2 A7), and C108 (151-10 D1). It applies to diesel only.

Where does the ground at S205 come from and go to?

It comes from splice S203 on page 10-13 (point L) and continues through connector C200 (151-18 A5) to splice S200 on page 10-11 (point K).

Which items on this ground diagram are Bronco-only?

The rear window defrost control (C278) and the master tailgate window switch (C274) are marked BRONCO.

Which radio connectors are used with premium sound?

Connectors marked with an asterisk — *C211 and *C257 — are for premium sound (location reference 151-14 A4).

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1994 Ford Bronco/F-Series EVTM Grounds 10-14 - S205 Ground Splice Diagram

1994 Bronco/F-Series ground wiring diagram page 10-14, radio and blower motor circuits

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Ford ground wiring diagram showing rear defrost, radio, blower motor switch and fuel tank selector circuits joining splice S205.

AI caption June 2016 · Photo 274 of 413

This is page 10-14, "Grounds," from the 1994 Ford Bronco/F-Series Electrical and Vacuum Troubleshooting Manual (EVTM), applicable to ALL models. The diagram shows the ground splice S205 and the circuits that connect to it. Components grounded through S205 include the Rear Window Defrost Control (connector C278, Bronco only, page 56-1), Remote Keyless Entry Module (C240, with-RKE only, page 111-1), Radio (C257, with *C211/*C257 for premium sound, pages 130-1/130-2), Blower Motor Switch (C260, pages 53-2, 54-2, 54-4, 54-5), Fuel Tank Selector Switch (C268, page 49-1), Engine Speed Sensor (C184, diesel only, page 60-5, circuit 644 dark green through connectors C202 and C108), and the Master Tailgate Window Switch (C274, Bronco only, page 100-2). The splice receives its ground feed from S203 on page 10-13 (point L) and continues to S200 on page 10-11 through connector C200 (point K). Component-view location references such as 151-14 A4, 151-2 A7, 151-10 D1, and 151-18 A5 are given for the connectors. This page helps diagnose ground-side faults in the radio, blower, RKE, defrost, fuel selector, tailgate window, and diesel engine speed sensor circuits.

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Frequently asked questions

What components are grounded through splice S205 on a 1994 Bronco/F-Series?: The rear window defrost control (C278), remote keyless entry module (C240), radio (C257/*C211), blower motor switch (C260), fuel tank selector switch (C268), engine speed sensor (C184, diesel only), and master tailgate window switch (C274).
What wire color and circuit number is the engine speed sensor ground?: Circuit 644, dark green (DG), passing through connectors C184, C202 (151-2 A7), and C108 (151-10 D1). It applies to diesel only.
Where does the ground at S205 come from and go to?: It comes from splice S203 on page 10-13 (point L) and continues through connector C200 (151-18 A5) to splice S200 on page 10-11 (point K).
Which items on this ground diagram are Bronco-only?: The rear window defrost control (C278) and the master tailgate window switch (C274) are marked BRONCO.
Which radio connectors are used with premium sound?: Connectors marked with an asterisk — *C211 and *C257 — are for premium sound (location reference 151-14 A4).