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1996 Ford Bronco Backup Lamps Wiring Diagram 93-2 - TR Sensor E4OD/4R70W
Reference · 1992-1996 BroncoAll 411 wiring diagrams
Backup lamp wiring diagram showing the E4OD transmission range sensor and starting/all-wheel-drive circuit connections.
Part of 1992-1996 Ford Bronco Wiring Diagrams
This document is page 93-2, "Backup Lamps," from a Ford electrical/vacuum troubleshooting manual (EVTM) wiring diagram set. It shows the backup lamp circuit routing through the Transmission Range (TR) sensor used with 4R70W or E4OD automatic transmissions. A callout explains that with the transmission in REVERSE, the manual lever position sensor directs current to illuminate the backup lamps. Inputs to the TR sensor include circuit 32 (R/LB, 12V in START) from the Starting System (pages 20-2, 20-4), circuit 57 (BK) from All-Wheel Drive (page 34-1), circuit 298 (P/O, 12V in RUN) from the E4OD Transmission (pages 30-1, 30-4) or 4R70W Transmission (page 29-4), and circuit 359 (GY/R) via connector C1012 (4R70W only). Outputs include circuit 32 (R/LB, 12V in P or N) back to the Starting System, circuit 463 (R/W) to All-Wheel Drive, circuit 140 (BK/PK, 12V in REVERSE) feeding the backup lamps, and circuit 199 (LB/Y) via C1012 to the transmission pages. The reader learns wire colors, circuit numbers, connector C1012 usage, and that TR sensor switch testing procedures are on page 149-10.
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Frequently asked questions
- What wire carries 12V in REVERSE to the backup lamps?
- Circuit 140, BK/PK (black/pink), leaves the Transmission Range (TR) sensor with 12V when the transmission is in REVERSE.
- How do the backup lamps get power?
- With the transmission in REVERSE, the manual lever position (Transmission Range) sensor directs current to illuminate the backup lamps.
- Which circuit is used only with the 4R70W transmission?
- Circuit 359 GY/R through connector C1012 is marked * 4R70W ONLY.
- Where can I find TR sensor switch testing procedures?
- The diagram directs you to page 149-10 for Transmission Range (TR) sensor switch testing.
- What circuit connects the TR sensor to the starting system?
- Circuit 32 R/LB (red/light blue): it carries 12V in START into the sensor and 12V in P or N back to the Starting System (pages 20-2, 20-4).
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