All lost forced to light up the instrument for L, Magotan B8, Q3/A3, 7, etc. You only need to unplug the plug to support online and learning keys. No need to break the car line for short circuit or dismantle the smart box. Suitable for cases where 3 wires cannot light up the instrument. Note: Installation guide not included. Professional installation is strongly recommended. Please verify compatibility to ensure the item meets your needs. Due to different batches, angles, and lighting, slight differences may exist between the actual product and the picture. These variations will not affect normal use. The harness color is random; specified color requests cannot be accommodated. Color: Black Material: Plastic Package Contents: 1 x Smart Short Circuit Wire Only the above package content is included; other items are not part of this package. Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.