S15/T15 2WD Jimmy V6-262 4.3L (1991)
Speedometer Head: Description and Operation
The electric speedometer drive replaces the mechanical drive for all S/T applications. Integrated circuits control the air core speedometer and stepper
motor odometer. The speedometer and odometer receive a signal from the Digital Ratio Adapter Controller (DRAC) generated by the Vehicle Speed
Sensor (VSS).
