I played with the tail light bulb assembly on my 87 300 E, and the bulb carrier metal part pops out easily by gently spreading the plastic wings which hold the metal assembly. Once I find or make a metal contact for the plastic base, I plan to wire it to the existing brake light to give 4 brake lights instead of the existing 2. Any comments on the need to upgrade fuses, or the capacity of the wiring to handle the extra 12V32W bulb on each side? Would it be safer to use a 12V21W bulb in the new socket?
Maybe try one of the 12V 1 watt LED "bulbs" if current is a problem?
87 300E 53,000 miles