Didn't know you had dual cables. Do you have one running to the cruise and the other from the cruise to the speedo head? I'd bet the lower cable is bad, but would probably change both.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.