Astro, Safari & "S" Series
The electronic instrument cluster is a solid-state device that uses a digital display to transmit information to driver. The electronic instrument cluster receives signals from several components and systems on vehicle.
The electronic instrument cluster receives input signals from: English/Metric switch, odometer trip switch, battery, odometer reset switch, ignition, lighting system, oil sending unit, fuel sending unit, charging system, temperature sending unit, and the digital ratio adapter controller.
The vehicle speed sensor signal originates at transmission, and is changed to a digital signal by the digital ratio adapter controller. The electronic instrument cluster does not contain any serviceable components and is serviced as an assembly.