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

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.