Hi Joel!

A friend of mine had the same problem with his 1991 300E 4matic. Check your lisence plate lights too. If they are also out even with a change of bulbs, the problem would be deeper in the harness that goes in the left trunk hinge.

Not an easy ask but I found 3 broken wires. All I did was to splice them back, and all the lights started working.

Or it may be something simple as a corroded connection....

Bernie
1986 190E 2.3-16

__________________
Bernie
1986 190E 2.3-16