16-Pin LED Matrix Headlight Wire Harness Connector – OEM 33472-1601 / 33482-1606 | Type A & B Female + Male

The OEM 33472-1601 / 33482-1606 are 16-pin connectors used in advanced LED matrix (pixel) headlight assembly harnesses. The 16-pin configuration is required for the most complex headlight systems — LED matrix headlights with individual LED segment control, Adaptive Front-lighting System (AFS), Adaptive High Beam Assist (AHB), headlight leveling, DRL, turn signal, and CAN bus node circuits all in a single connector. Available in Type A Female, Type B Female, Male, and a 20cm Male-and-Female pair, bare or with 15cm pre-wired leads.

Key Specifications

• OEM Part Numbers: 33472-1601 (Type A Female) / 33482-1606 (Type B Female)
• Pin count: 16-pin
• Gender options: Type A Female / Type B Female / Male / Male-and-Female pair
• Housing material: High-temp nylon (PA66)
• Available as: Bare connector / 15cm pre-wired / 20cm Male-and-Female pair
• Application: LED matrix headlight, AFS, AHB headlight assembly harness

Why 16 Pins? – The LED Matrix Headlight Circuit Breakdown

LED matrix (pixel) headlights represent the current pinnacle of automotive lighting technology. Unlike conventional LED headlights with a single LED driver, matrix headlights contain multiple independently controlled LED segments that can be selectively dimmed or switched off to avoid dazzling oncoming traffic while maintaining maximum illumination elsewhere. A 16-pin connector for a matrix headlight typically carries:

• Pins 1–2: LED matrix driver power supply (redundant)
• Pins 3–4: LED matrix driver ground (redundant)
• Pins 5–6: LED matrix CAN bus (CAN High / CAN Low)
• Pins 7–8: AFS stepper motor control (A / B phase)
• Pins 9–10: Headlight leveling motor control
• Pin 11: DRL (Daytime Running Light) circuit
• Pin 12: Turn signal circuit
• Pin 13: Position / tail light circuit
• Pin 14: AHB camera trigger signal
• Pin 15: Headlight module LIN bus
• Pin 16: Headlight module wake-up / enable signal

Fault Codes from a Degraded 16-Pin Headlight Connector

A corroded or damaged 16-pin headlight connector can disable the entire headlight module, generating multiple simultaneous B-codes:

• B1000–B1099: Headlight module internal fault / communication loss
• B1600–B1699: AFS stepper motor circuit fault
• B1700–B1799: Headlight leveling motor circuit fault
• U0140: Lost communication with Body Control Module (if headlight CAN bus is affected)
• U0073: CAN bus off (if headlight module CAN node is lost)

AFS Calibration After Connector Repair

After any headlight module harness repair, the following calibrations are recommended:

• AFS headlight calibration — required to re-establish the headlight module’s reference position after power interruption
• Adaptive High Beam Assist (AHB) calibration — required to re-align the camera-based glare-free high beam system
• Headlight leveling calibration — required if the leveling motor circuit was interrupted

Use a compatible scan tool (VCDS for VW/Audi, ISTA for BMW, XENTRY for Mercedes, Techstream for Toyota) to perform these calibrations after connector replacement.

Frequently Asked Questions

Q: What vehicles use OEM 33472-1601 / 33482-1606?
A: Cross-reference OEM 33472-1601 / 33482-1606 with your vehicle’s wiring diagram to confirm fitment. These connectors are used in LED matrix headlight harnesses across multiple automotive brands. The part numbers are Molex-series connector designations used by multiple OEMs.

Q: What is the difference between Type A (33472-1601) and Type B (33482-1606)?
A: Type A and Type B use different housing geometries (locking tab position, cavity arrangement) to prevent mis-mating between left and right headlight assemblies or between different headlight module generations. Match the type to your existing connector housing.

Q: My headlight works but AFS doesn’t — could this be the connector?
A: Yes. If the AFS stepper motor circuit pins (typically pins 7–8) are corroded, the AFS function will fail while the basic headlight illumination continues to work. This is a common symptom of partial connector corrosion on 16-pin headlight connectors.

Q: Are terminals included?
A: Yes, terminals are included with all variants.