You have to remove the cluster in order to get to it, after that it is very simple as the two bars are looking right at you after it is uninstalled.

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Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k