So you want to upgrade your instrument cluster bulbs?

[speedy300Dturbo]

DO NOT use 5 watt bulbs unless melting and making the lighting channels turn brown amuses you. The previous owner had 5 watt 194 bulbs installed. Fortunately I was able to replace the instrument cluster bezel with an un-melted one from a 1995 E320. Please use the correct wattage bulbs - Sylvania 2821 which are 3 watts.

Assuming that your lighting channels aren't melted, you can improve the illumination drastically by cleaning the channels and replacing the bulbs with NEW correct wattage ones.