What wire colors are used in the mechanical shift 4x4 indicator circuit?

Circuit 640 is R/Y (red/yellow) from the fuse panel, circuit 210 is LB (light blue) for the 4x4 indicator, and circuit 784 is LB/BK (light blue/black) for the low range indicator.

Which fuse powers the 4x4 and low range indicators on a mechanical shift transfer case?

Fuse panel position 7, which is hot in START or RUN, feeds circuit 640 R/Y (fuse panel details referenced on pages 13-3 and 13-9).

How does the PCM receive the low range signal?

Circuit 784 LB/BK branches at splice S174 to the Powertrain Control Module, through connector C1027 pin 12 on diesel engines and connector C185 pin 12 on gasoline engines.

Which connectors are in the path between the instrument cluster and the 4X4 HI/LOW indicator switch?

The circuits pass through C250 at the cluster, then C202 (784 circuit), and connectors C103, C117, and C161 before reaching the 4X4 HI/LOW indicator switch.

Does this circuit connect to any other vehicle systems?

Yes: circuit 210 LB branches at splice S244 to the Anti-Lock Brakes (ABS) system, referenced on page 42-2.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ 1993 Ford Bronco/ Photo supermotors.net/registry/media/261581

Ford Bronco Manual Transfer Case 4x4 Indicator Wiring Diagram - Mechanical Shift

Mechanical shift 4x4 wiring diagram with PCM, fuse panel and color-coded wires

‹ ›

Wiring diagram for the mechanical-shift 4x4 system showing the fuse panel, PCM, indicator switch, and color-coded circuits.

Part of 1992-1996 Ford Bronco Wiring Diagrams

AI caption November 2005 · Photo 133 of 480

This document is a Ford factory-style wiring diagram titled "MECHANICAL SHIFT," showing the electrical circuit for the mechanically shifted (manual) transfer case 4x4 and low-range indicator system. Power comes from fuse panel position 7 (hot in START or RUN, referenced to pages 13-3 and 13-9) through circuit 640 R/Y and splice S215 to connector C250 at the instrument cluster (page 60-2), which houses the 4X4 indicator (pin 11) and LOW RANGE indicator (pin 12). From the cluster, circuit 210 LB (light blue) runs through splice S244 (with a branch to the anti-lock brake system, page 42-2) and circuit 784 LB/BK (light blue/black) runs through connector C202 and splice S174. Both circuits pass through connectors C103, C117, and C161 to the 4X4 HI/LOW indicator switch, which grounds the appropriate circuit to illuminate the 4X4 or LOW RANGE lamp. Circuit 784 LB/BK also branches from S174 to the Powertrain Control Module: via connector C1027 pin 12 on diesel engines (page 10-4) and via connector C185 pin 12 on gasoline engines (pages 23-2, 24-2, 21-4). The diagram gives searchers wire circuit numbers, colors, splice and connector identifiers, and cross-references for diagnosing 4x4/low-range indicator problems.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What wire colors are used in the mechanical shift 4x4 indicator circuit?: Circuit 640 is R/Y (red/yellow) from the fuse panel, circuit 210 is LB (light blue) for the 4x4 indicator, and circuit 784 is LB/BK (light blue/black) for the low range indicator.
Which fuse powers the 4x4 and low range indicators on a mechanical shift transfer case?: Fuse panel position 7, which is hot in START or RUN, feeds circuit 640 R/Y (fuse panel details referenced on pages 13-3 and 13-9).
How does the PCM receive the low range signal?: Circuit 784 LB/BK branches at splice S174 to the Powertrain Control Module, through connector C1027 pin 12 on diesel engines and connector C185 pin 12 on gasoline engines.
Which connectors are in the path between the instrument cluster and the 4X4 HI/LOW indicator switch?: The circuits pass through C250 at the cluster, then C202 (784 circuit), and connectors C103, C117, and C161 before reaching the 4X4 HI/LOW indicator switch.
Does this circuit connect to any other vehicle systems?: Yes: circuit 210 LB branches at splice S244 to the Anti-Lock Brakes (ABS) system, referenced on page 42-2.