Hey, I recently had transmission repairs done to my 2000 neon. stick shift. after its been repaired, the speedometer refuses to work, and also the temparature gauge. when i put the car on 'ON switch' (not start it), the temparature guage goes up just a tad bit, then it goes dead. However the speedometer does NOTHING whats o ever. I tried getting bak to the guy who did the transmission repairs, but its hopeless...You guys got any ideas? Also, my Rear speakers works at times, and sometimes it dont. could that be related? PLEASE HELP......

 

Speakers should just be powered by the radio. Just wires or speaker going bad. Speedo should be off the trans I think si that is an issue for him to fix. But look at output sensors.

Temp gage check your wiring to the Coolant Temperature Sensor.