Mercedes Vito W639 Rear Light Wiring Diagram Exclusive

| Function | Typical Wire Color | Notes | | :--- | :--- | :--- | | | Black with White stripe (or Black/Green) | Pulse signal from Rear SAM. | | Right Indicator | Black with Green stripe (or Black/White) | Pulse signal from Rear SAM. | | Tail Light (Parking) | Grey with Black stripe | Low current (5W) for side lights. | | Brake Light | Black with Red stripe | High current (21W) activated on pedal press. | | Reverse Light | Black with Blue stripe | Activated via ignition switch/Reverse switch. | | Rear Fog Light | Grey with White stripe | Low current, usually single side activation. | | Ground (Earth) | Brown | The most important wire for circuit completion. |

Since the W639 Vito (and identical Viano) underwent a facelift in 2010, the wiring changed significantly. Below are the diagrams for and Facelift (2010-2014) , plus the common towing module integration. mercedes vito w639 rear light wiring diagram

. For a standard W639, the wire functions at the rear cluster connectors are generally defined as follows: Common Ground | Function | Typical Wire Color | Notes

Mercedes uses a consistent color system across the W639 platform. Here is a quick reference: | | Brake Light | Black with Red

Pin numbering may vary by manufacturer (Hella / AL). Always verify with a multimeter before cutting wires.