Is your Hill Billy speed control erratic? You probably need a new potentiometer (if yours is over 3 years old) This is a replacement 10k pot for the older models of Hill Billy powered golf trolleys A replacement for the All Terrain, Compact and HiLite models NOT suitable for the Compact Plus or latest Terrain models (If your potentiometer is over 3 years old it can show signs of wear,  erratic operation plus flat spots when adjusting speed) Easily self-fitted - no soldering required - comes complete with wires and a terminal block