This Interior Canbus LED Lights Kit is compatible with SL, Cla, R129, R230, SL55, SL500, SLK, R170, R171, R172 models. Provides high-quality, super bright LED bulbs for interior lighting, perfectly replacing original halogen bulbs to enhance brightness and provide a look. For SL Cla R129 1992-2001 (8PCS): Package includes: 2 x LED Front Dome & Map light 4 x LED Vanity Mirror light 1 x LED Trunk Light 1 x LED Glove Box light 1 x Installation tool For SL Cla R230 2002-2011 (8PCS): Package includes: 4 x LED Front Dome & Map light 2 x LED Vanity Mirror light 1 x LED Trunk Light 1 x LED Glove Box light 1 x Installation tool For SL Cla R230 2012-2020 (5PCS): Package includes: 4 x LED Front Dome & Map light 1 x LED Trunk Light 1 x Installation tool For SLK Cla R170 1996-2003 (7PCS): Package includes: 4 x LED Front Dome & Map 2 x LED Trunk Light 1 x LED Glove Box 1 x Installation tool For SLK Cla R171 2004-2010 (6PCS): Package includes: 2 x LED Front Dome & Map 2 x LED Vanity Mirror 1 x LED Trunk Light 1 x LED Glove Box 1 x Installation tool For SLK Cla R172 2011-2016 (5PCS): Package includes: 2 x LED Vanity Mirror light 2 x LED Trunk Light 1 x LED Glove Box light 1 x Installation tool Product Features: High-quality LED bulbs, super bright, 100% Canbus error free (no ECU errors), easy to install, plug and play, direct fit into original socket, energy efficient, excellent heat resistance design, long lifetime up to 50,000 hours. Installation: Turn off the light before installation and allow the bulb to cool down before removal. Remove the stock bulb and install the new LED bulb in its place. If the lamp does not light up, try rotating the bulb 180 degrees to ensure correct polarity connection. Adjust the metal pin holder as needed for a secure fit.