94 astro van speedometer quit working 30 minutes later Dec 29, 201394 astro van speedometer quit working 30 minutes later stays in low gear only in forward, fluid does not smell no leaks! Ok Randy at this point check the wiring to the VSS on the rear of the transmission and make sure the 2 wires going to it are good. It is a 94 astro lt with 106k miles on it. I got into the van and everthing was fine.5/5 | Repair Guides | Wiring Diagrams | Wiring Diagrams wwwzone››Chassis Electrical›Wiring DiagramsAutoZone Repair Guide for your Chassis Electrical Wiring Diagrams Wiring DiagramsEntertainment Systems · Dome Light Chevrolet Astro Speedometer Is Not Working While there are a variety of reasons your Chevrolet Astro speedometer is not working, the most common 3 are the vehicle speed sensor (VSS), a faulty speedometer, or an electrical issue.[PDF] 3 8 & 5 ELECTRIC SPEEDOMETER - AutoMeter Home This electric speedometer utilizes a LCDto display odometer and trip odometer mileage. Momentarily pressing of the Trip/Reset button Connect the speedometer wires as shown in the wiring section. 4. Secure the speedometer to the dashboard using the provided bracket, and hardware. Resources - Installation Support - Auto Meter Resources. Installation Support. Find product manuals and wiring diagrams for your Auto Meter product. We've used a marine speedometer in this instance, though the technology and operation is exactly the same in the automotive line. AutoMeter Wideband Air/Fuel Tuning.