1995 Ford Bronco Charging System Wiring Diagram - Alternator & Regulator (12-1)
Reference · 1987-1991 BroncoAll 175 wiring diagrams
Charging system wiring diagram for a 1995 Bronco showing the generator/voltage regulator, battery, charge indicator and color-coded circuits.
Part of 1987-1991 Ford Bronco Wiring Diagrams
This is page 12-1 of the 1995 Ford Bronco electrical/vacuum troubleshooting manual, showing the Charging System wiring diagram. It illustrates the circuit from the battery (grounded at G101 body and G103 engine via BK wires) through Fuse Link J (12 GA gray) to the generator/voltage regulator assembly, which contains the rectifier, regulator, and sensing/switching circuits with I, S, and A terminals plus F screw and A screw. Wire circuits shown include 38 BK/O (B+ output), 36 Y/W, 4 W/BK (stator feedback), and 904 LG/R to the charge indicator. The right side shows the ignition switch (hot at all times, page 13-3, switch testing on page 149-2) feeding 16 R/LG through connector C269, splice S206, and C250 to the 500-ohm charge indicator in the instrument cluster (page 60-4). Connectors identified include C153, C154, C139F/C139M, C202F/C202M, C250, and C269, with component location grid references such as 151-2 F5, 151-3 A6, 151-2 C1, 151-2 A8, and 151-3 D1. An explanatory callout describes regulator operation: current flows from sense A circuit to the alternator field coil, AC output is rectified to DC at the B+ terminal, and the S circuit voltage (typically half battery voltage) turns off the charge indicator. Diagnostic info is in Service Manual section 14-00.
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Frequently asked questions
- What fuse link protects the 1995 Bronco charging system circuit?
- Fuse Link J, a 12 gauge gray fuse link, is in the B+ output circuit between the generator and the battery/starting circuit.
- What wire colors are used in the 1995 Bronco charging system?
- Circuit 38 is BK/O (black/orange), circuit 36 is Y/W (yellow/white), circuit 4 is W/BK (white/black), circuit 904 is LG/R (light green/red), circuit 16 is R/LG (red/light green), and grounds are BK (black).
- How does the charge indicator work on the 1995 Bronco?
- The charge indicator (500 ohms, in the instrument cluster) receives 12V in START or RUN through 16 R/LG from the ignition switch. The S (stator) circuit feeds back a voltage signal, typically half battery voltage, which the regulator uses to turn off the indicator.
- Where are the charging system grounds on the 1995 Bronco?
- G101 is the body ground and G103 is the engine ground, both connected to the battery negative via BK wires (location views 151-3 D1 and 151-2 C1).
- Where is diagnostic information for the 1995 Bronco charging system?
- The diagram refers to section 14-00 of the Service Manual for diagnostic information, page 20-1 for the starting system, page 13-3 for the ignition switch/power distribution, and page 60-4 for the instrument cluster.
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