Left turn signal inop. Right is OK. Using a test light I determined that there is no power to the left turn signal fixture. Can't be the fuse because they both use the #12 slot and that fuse is okay as edvidenced by the right signal working properly.

This is a 1984 300SD ... Any thoughts?

By the way. I have been in the background learning much from each and every poster. I am also blessed to be within driving distance of Steve at Continental Imports in Gainesville, Florida.

Bill,

Yes it does light up but blinks at a much quicker rate than the right signal that does work.

Bill,

Sorry, I forgot a significant piece of information.

The only turn signal that does not work, is the front left.

The rear left works fine. As does the front right and rear right.

Does this change your advice?

Did you ever receive a response or figure out what was causing the problem with you left turn signal. I have a 1976 450 SL with the same problem. Help from anyone would be appreciated.

I assume that "no power to the left turn signal fixture" means you have pulled the light bullb (did you check the bulb?) and tested the socket. If that is the case, then you must have an open circuit to that socket: e.g. loose or corroded connection, or broken wire. Let's see: 21 years old, Florida, hot, humid, and salty. Assume corrosion; clean the contacts and apply some di-electric grease available at any auto parts store.
Hope this works.
regards,
Mark