when working you must have knocked wire loose for battery termial. i changed the battery ends on my zx2 and missed one wire and spedometer stopped working. found the wire hooked it back up and has never failed since. i hope this helps you with your problem.
it doesnt have one, it is an electronic speedometer
alternator
The regulator for the 1997 Ford Thunderbird is bolted on the back of the alternator. While the regulator can be changed separately it is more commonly changed along with the alternator.
Unless things have changed, the diodes are part of the alternator. The voltage regulator is attached to the alternator but the diodes are part of the alternator.
That was happening to my Ford Focus, turns out it was the alternator, i got it changed now it turns on...
This usually means that the alternator isn't charging.
Alternator
No, it will only match '95 -'01 Taurus. They changed the mounting frame in late '01
yes it can. i had a 2004 ford mustang that kept reading that the camshaft position sensor was the cause. Changed the cps and still same code. changed alternator and the code cleared itself!
Yes , I BELIEVE the last year for a speedometer cable on a Ford Explorer was the 1995 model year so the 1991 Ford Ranger would definitely have a speedometer cable
controls speedometer
You can find a speedometer for a 1990 Ford Probe online at places like Ebay or Amazon. You can also find this speedometer at Rock Auto on the Internet.