Electronics

Restore Reliability to Your E9x Headlights with ECS Tuning’s Premium Replacement Harness

Headlight electrical issues are a common headache for many E9x owners. Over time, the factory wiring inside Pre-LCI BMW E92 and E93 3 Series headlights—as well as all E9x M3 models equipped with factory Xenon adaptive lighting—tends to become brittle and crack. This well-known problem can lead to flickering lights, adaptive headlight malfunction warnings, or even internal shorts that cause costly damage. With genuine Xenon headlights becoming increasingly scarce, maintaining them has never been more important.

ECS Tuning offers a long-lasting solution with its Headlight Wiring Harness Repair Kit, engineered specifically to eliminate this failure point. Each harness is built from modern, heat-resistant materials and fitted with pre-terminated, OEM-style connectors for a clean, straightforward installation. The result is improved reliability and restored confidence in your lighting system.

Don’t wait until your lights fail or an adaptive headlight error appears. Replace your deteriorating factory harness with ECS Tuning’s upgraded repair kit and keep your lighting system performing as it should.

Key Features

Designed for Xenon Adaptive Headlights

OE-style fitment with enhanced insulation to resist cracking and heat damage

Complete set includes both left and right harnesses, plus integrated jump wire for full functionality

Detailed installation instructions provided for easy DIY installation

Fitment & compatibility:

All E90, E92, E93 M3 E92 Pre-LCI 328i, 328xi, 335i E92 Pre-LCI 328i, 335i Kit Contents:

One headlight repair harness (Fits left or right) 3x - heat shrink sleeves 9x - 22-24 gauge butt connectors Product Development:

This headlight repair harness was developed, engineered, and quality-tested by ECS Tuning’s in-house Research & Development team. Every detail reflects ECS’s commitment to precision and durability, utilizing advanced tools and technology, including FARO laser scanning, SolidWorks 3D CAD modeling, in-house 3D printing for rapid prototyping, and long-term performance testing.

Installation & Support:

ECS Tuning provides a comprehensive installation guide that covers the entire process, from opening your OEM headlights to installing the new harness.

- CLICK HERE FOR INSTALLATION INSTRUCTIONS -

Enhance your BMW's lighting performance with Xenon control units optimized for Xenon or HID headlights. These units, typically installed at the bottom of the headlights, play a crucial role in ensuring stable and reliable Xenon behavior. Experience improved headlight functionality and eliminate erratic behavior with these high-quality control units.

• Specifically designed for Xenon or HID headlights
• Critical for maintaining stable Xenon behavior
• Eliminates erratic headlight performance
• Enhances overall lighting performance for safer driving