hey all. I just got done having some testing done. Voltage regulator is going bad. So shat I need to know it, how to do I find my alternators amp rating? Autozone has 3 different ones available for different amp ratings.

 

I couldn't tell what truck you were talking about and had to dig around your profile.
If this is the 93 and a gas engine, it should have a 3G alt and if factory it will be a 95amp.
95A will have 4 holes on the front whereas a 130A from an Explorer/Mustang etc will have 2 holes in it.

Unless you have serious tunes and a winch a 95A will probably be sufficient.

Check this out:
3G interchange facts

 

Whoops, thought my SIG line was still there.

Its a 1993 Ford F-250 4wd, 351W (5.8L gas), 5-speed manual.

 

When the OEM in my 93 finally died at more than 220k miles, I installed the 130A listed as for an Explorer.
Just a few bucks more, but really is unnecessary in my case.

If you need the extra amperage it would be a good move to upgrade the charge wire and consider adding a fuse to the picture (or go to wrecking yard and get the factory fusible link and charge wire for the explorer w/ the 130A alt).