Quote from Franklin on July 22, 2025, 1:20 pm

Mercedes-Benz 206/254/214 Rear Door Ambient Light Retrofit

Background Issue

• Mercedes-Benz models (C-Class 206/E-Class 254/214 series) have deleted rear door ambient lighting from factory configuration
• Owners commonly report that only reflective strips remain, significantly impacting user experience

Technical Solution

• Operating Principle: Restore functionality by tapping into existing vehicle wiring harness signals
• Specific Implementation:
  • Mercedes C-Class (206): Signal wire from Door Lock Module 3# (X35/3X1) → Pin 6# (door hinge location)
  • Mercedes E-Class: Signal wire from Door Lock Module 8# (X35/1X1) → Pin 5# (door hinge location)
• Plug-and-Play Option: Commercial non-invasive harness adapters available (no coding required)

Performance Comparison

• Post-retrofit performance matches OEM front door ambient lighting
• Significantly superior to factory reflective strip design