I followed G-Benz's suggestion and looked under the accelerator pedal. I saw a black cable going into a body opening and a white cable going up, which one is the speedo cable?
I moved both of them around. The black one was almost flat at the turn into the opening. Anyway, now the needle vibrates less. I did not want to further without being sure which cable was the speedo.
G-Benz, Mick J which one is it?
94 E320 58000 Miles