Specific wiring harness for retrofitting the automatically dimming exterior mirrors for Mercedes Benz The exterior mirrors darken automatically in light (e.g. rear lights) Suitable for the following vehicles: Mercedes CLA-Class C/X-Series 117 Mercedes A-Class W176 Series Mercedes B-Class W246 Series Mercedes GLA-Class X156 Series Package includes: Wiring harness Note: The mirror glass is also required The compatibility of the door control units must be checked