Noisy/Jumpy Speedometer (When Cool)

Pull cable and re-lube it with speedometer cable lube. Also lube the spedo’s head bushing where cable attaches.

They come out from the speedometer end.
Take the cable off at the speedometer and pull the cable out of the housing.
I put the lube on it as it's going back in, because this saves from having a long gooey cable to deal with.

When it hits bottom going back in, twist it a little till it drops all the way back in, then reconnect to the speedo.