13 - READING IN MPH; ONLY USED WITH AUTOMATIC FOUR-SPEED TRANSMISSION AND AUTOMATIC LOCKING DIFFERENTIAL,ACCELERATION SKIDCO Model designation: 124 - 032/052
14 - READING IN MPH; ONLY USED W/AUTO. FIVE- SPEED TRANSMISSION & AUTO. LOCKING DIFFE- RENTIAL OR ACCELERATION SKID CONTROL Model designation: 124 - 032/052