Speedometer drops to 0 and radio sound goes down
It is actually a 1996, didn't have that selection. The speedometer isn't working right. It stays on 0 most of the time and when it does jump up to close to the correct speed the radio becomes clearer and slightly louder. On the wiring diagrams (Haynes repair manual) it shows the radio connected to the vehicle speed sensor buffer.
All other gauges work fine. Would this be a ground problem or speed sensor?