BMW / Mercedes-Benz 8-Pin Brake Light & Tail Light Wire Harness Connector – Male & Female OEM

This 8-pin connector is used in BMW and Mercedes-Benz brake light and tail light assembly harnesses. The 8-pin configuration integrates stop light, turn signal, reverse light, tail/position light, LED driver, and module communication circuits for multi-function rear light assemblies. Available in Male and Female variants, bare or with 15cm pre-wired leads.

Key Specifications

Why Tail Light Connectors Fail

BMW and Mercedes-Benz tail light connectors are exposed to road spray, moisture, vibration, and thermal cycling from LED light assemblies. Terminal corrosion or housing damage causes brake light failures, turn signal faults, reverse light malfunctions, or LED module communication errors. These are safety-critical faults that trigger B-code fault codes on BMW ISTA or Mercedes XENTRY diagnostic systems. Replacing the connector restores full tail light circuit integrity.

Variant Guide

• Male / Male 15CM – Plug-side connector for the tail light module
• Female / Female 15CM – Socket-side connector for the harness side

Installation Steps

1. Disconnect the vehicle battery
2. Remove the tail light assembly to access the harness connector
3. Release the locking tab and unplug the original 8-pin connector
4. Transfer terminals to the new housing or splice in the pre-wired variant
5. Reinstall the tail light and verify all functions (brake, turn, reverse, position, LED)

Frequently Asked Questions

Q: What BMW and Mercedes-Benz models use this 8-pin tail light connector?
A: This connector is used on BMW 3 Series (G20), 5 Series (G30), X3/X5, and Mercedes-Benz C-Class (W205), E-Class (W213), GLC tail light harnesses. Cross-reference your vehicle’s wiring diagram to confirm fitment.

Q: What fault codes indicate a tail light connector issue?
A: Common codes include B-codes for brake light circuit faults, turn signal open circuit, LED module communication errors, and reverse light relay faults on BMW ISTA or Mercedes XENTRY diagnostic systems.

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

Compatible Applications

• BMW 3 Series G20 / 5 Series G30 / X3 / X5 – Tail light harness
• Mercedes-Benz C-Class W205 / E-Class W213 / GLC – Brake light connector
• LED rear light module harness repair