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1996 Ford Bronco Backup Lamps Wiring Diagram (93-2): Reverse & Trailer Relay
Reference · 1992-1996 BroncoAll 411 wiring diagrams
Backup lamp wiring diagram showing left/right backup lamps, automatic day/night mirror and trailer backup lamps relay circuits.
Part of 1992-1996 Ford Bronco Wiring Diagrams
This is page 93-2 ("Backup Lamps") of a Ford wiring diagram set, uploaded as part of a multi-page collection for a 1996 Ford Bronco. It shows the backup (reverse) lamp circuit. Power enters from connector C103 (referenced on page 93-1) on circuit 140 BK/PK (black/pink), passes through splice S116 and connectors C202M/C202F, with a branch through C200M/C200F feeding the Automatic Day/Night Mirror (page 125-1). The 140 BK/PK circuit continues through C205F/C205M to splice S424, which feeds the Left Backup Lamp (via C406F/C406M and C433) and the Right Backup Lamp (via C405F/C405M and C434). Both lamps ground on circuit 57 BK through splices S406, S405, and S401 to ground G100 (grounds page 10-3). The diagram also shows the Trailer Backup Lamps Relay in the Trailer Relay Box: it receives reverse-signal power on 140 BK/PK, battery feed on circuit 37 Y from Power Distribution page 13-2, grounds on 57 BK through S102 to G100 (grounds page 10-1), and when energized sends power on circuit 963 BK/LG (black/light green) through connectors C202, C205, C424M/C424F, and C417M/C417F to the trailer backup lamps. A callout notes the relay "Directs current to operate trailer backup lamps."
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Frequently asked questions
- What wire color and circuit number feeds the backup lamps?
- Circuit 140, BK/PK (black/pink), which comes from connector C103 (page 93-1) through splice S116 and connectors C202 and C205 to splice S424, then to the left and right backup lamps.
- How do the backup lamps ground?
- Both lamps ground on circuit 57 BK (black) through splices S406 and S405 to splice S401, then to ground G100 (see grounds page 10-3).
- What does the Trailer Backup Lamps Relay do?
- Per the diagram callout, it "directs current to operate trailer backup lamps." It is located in the Trailer Relay Box, is fed by circuit 37 Y from Power Distribution (page 13-2) and the 140 BK/PK reverse signal, and when energized outputs circuit 963 BK/LG to the trailer backup lamps.
- What circuit also branches off the backup lamp feed?
- The Automatic Day/Night Mirror (page 125-1) is fed from the 140 BK/PK circuit through connectors C200M/C200F.
- Which connectors carry circuit 963 BK/LG to the trailer backup lamps?
- From the relay, circuit 963 BK/LG passes through C202M/C202F, C205F/C205M, C424M/C424F, and C417M/C417F to the trailer backup lamps.
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