I wish my problem was a $15 cable!

I think my problem will be solved by rebuilding the odometer myself or buying a new cluster from a junkyard ($100)

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Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT