Hey guys, I've been gathering the gears necessary to repair the gauge cluster for pocket change. I got the gears that sell on other websites for $50 + for less than 20 shipped from half way around the world. Put them in and they were all a perfect fit except for the motor gear, which is too small. I will make a how to once I can put together a complete list of parts needed, I have looked and almost exhausted myself searching for a 12 tooth gear to fit on the 2mm shaft and drive the odometer + trip meter, radioshack doesn't have one, and I don't want to order random gears from everywhere to see if they fit. Part of the problem was the motor gear was desintigrated and I couldn't measure it's dimensions.

P.S.
For those who can't wait, here's where I found the two step gears:
gizmozone dot com

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1984 300sd auto with 246,000 miles