How to Install Illuminated Door Sills on a Mercedes C-Class W204

In this video, see how to install illuminated door sills on a Mercedes C-Class W204: move the seats back and disconnect the negative terminal of the battery. Remove the trim from the driver side, then take out the floor mats and carpet. You will need to remove the accelerator pedal and the front cover of the left side floor. Perform all these steps on the passenger side as well (except for the pedal), but you will need to remove the sound insulation from the footrest by first taking out the lower nuts, then the upper ones. Gently place the footwell on the floor. The sills can be purchased, for example, on eBay with the code 225689146351 for $210.00, with free shipping. Open the cable channel; the components will be arranged in a "U" shape from one side of the vehicle to the other. The power cables and those for the sills will be connected to each other via a plug connector, while the control unit will be placed behind the center console, with the converters on the right and left of the footwells. Pass the cable bundles through the opening behind the center console. Repeat the operation on the other side. Now remove the cover on the left side of the dashboard to access the cabin fuses. Connect the cable bundle to connector 129 and put it back in place. Close the cover. Secure the cables in the channel and close it: proceed to the other side. Secure the cables at the ground point, plug in the connector located in the right channel, then connect the power connector for the door sills. Secure the cables and the control unit with double-sided tape, and plug in the connector, then replace the passenger footrest. Connect the converters in the channel. Now position the sills, but first, clean the bases. Replace the rubber gasket and the floor cover. You can reconnect the battery.