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1801326-1 Automotive 15-Pin Waterproof Headlamp Connector — Car Headlight Wiring Adapter Socket
1801326-1 Automotive 15-Pin Waterproof Headlamp Connector Car Headlight Wiring Adapter Socket
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1801326-1 Automotive 15-Pin Waterproof Headlamp Connector — Headlight Wiring Adapter
The 1801326-1 is a 15-pin waterproof automotive headlamp connector for LED and adaptive headlamp assembly wiring harness applications. This TE Connectivity-referenced part number is used in headlamp assembly connectors across multiple vehicle platforms, providing a sealed interface between the vehicle wiring harness and the headlamp assembly’s internal LED drivers, leveling motors, and sensor circuits. The 15-pin configuration accommodates the multiple circuits required by modern multi-function headlamp assemblies.
Key Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 1801326-1 |
| Pin Count | 15-pin |
| Application | Headlamp assembly connector |
| Sealing | Waterproof (sealed) |
| Housing Material | PA66 glass-filled nylon |
| Terminal Material | Tin-plated copper alloy |
| Operating Temperature | -40°C to +125°C |
| Locking | Positive snap-latch |
| Compliance | RoHS |
Why Modern Headlamps Need 15-Pin Connectors
- LED driver power circuits — high-beam, low-beam, and DRL LED drivers each require dedicated power and ground circuits
- Adaptive leveling motor — automatic headlamp leveling requires 2–3 circuits for the stepper motor and position feedback sensor
- LIN bus communication — modern adaptive headlamps communicate with the BCM via LIN bus for automatic leveling, cornering light, and diagnostic functions
- Turn signal and position light — integrated turn signal and position light circuits add 2–4 additional circuits
- Waterproof sealed design — headlamp connectors are exposed to rain and car wash water; sealed connectors prevent moisture ingress that causes LED driver failures
Typical Applications
- LED headlamp assembly connector repair
- Adaptive headlamp wiring harness replacement
- Headlamp assembly replacement connector
- Custom headlamp wiring harness fabrication
Frequently Asked Questions
Q: How do I diagnose a faulty headlamp connector?
Common symptoms include: one or more headlamp functions not working (while the bulb/LED is confirmed good), intermittent headlamp operation, or headlamp warning light on the dashboard. Inspect the connector for corrosion, bent terminals, or cracked housing. Use a multimeter to check for voltage at the connector terminals with the headlamp switch on — no voltage indicates a wiring or connector fault upstream.
