The speedometer doesn't work. It doesn't respond to the speed we are going.
Why?
It depends on the year and options. Which year model are you asking about? On the 1996-2000 cluster, there's a light between the tach and speedometer for the cruise control (if equipped).
Tach is driven by a motor signal, speedo is from the trans the sensor is bad on the transmission
Blue wire is for a tach I believe
There isn't one, you shift by "feel" or by the red tick marks on your speedometer ,|,&.
Remove the instrument cluster and take it to a speedometer repair shop. They'll fix the speedo and you can reinstall the whole cluster. Or, do a search on the internet for speedometer or instrument cluster repair. There are several sites that do this. Rick I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://free-auto-repair-advice.blogspot.com
The Mazda tachometer and the speedometer have separate cables. The tachometer cable probably does not work properly. Change the tachometer cable.
Try changing the headlight switch.
I'm not sure about the speedometer, but if the tach is not working a good bet would be the tach filter. With age, a wire often breaks off on these. Look in one of the service manuals to find location. The speedometer may have a similar sensor, but I'm not certain. Thanks! I will check out the book ASAP. Appreciate your answering.
It should work ok if the wire for the tach under the hood is connected and I don't remember which one it is.
For any of you who may have been watching this question, I'll give you the answer myself. The answer is YES. After purchasing the one with the factory tach and installing it, everything works like it should.
Check for a blown fuse.