Speedometer cables connect the speedometer to the transmission. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. Our Ford Speedometer cable is designed to fit and function like the original part.  FORD $32.00
 
Dolphin Automotive carries GM Pulse Generators for those who use programmable gauges in an older transmission model GM car or truck.  GM $25.00