I'm so bored I went on Ask.com and looked around a bit, looks like the 2000 ranger came stock with a 95 amp alt. You just gotta look. Here's the site I actually found it on: https://www.rockauto.com/dbphp/mak,FORD
at the very least you'll burn out your battery and alt real quick, you have to think that your electrical system was built to run the vehicle with a little room for extreme situations, it's not designed to supply continuous power to other equipment with that kind of draw. You'll prolly want to look into a HO alt.
and of course, the amplifier will clip and your speakers will get damaged and need to be replaced. the voice coils will melt from the DC voltage caused by the clipping which can cause a dead short across the coils. this in turn will fry your amplifier(s) as well.
ok this sucks... lol, im gettin a ho alt then, my only issue is i dont wanna have to pay someone alot of $ to install it, becuase im far from a mechanic, i can build computers, and installing sound systems is easy.. but my alternator is under a lot of stuff in my engine and i dont wanna mess w/ it. Any1 know how much a shop would charge to install? Also do local stores sell ho alts, beucase im sure if i bought it online i'd pay a ton for shipping becuase the thing is big and heavy.
Morgan if you can install a computer/sound systems, then you can install an alternator. It's matter of having time and following instructions. Very easy. If you want it even easier, send the HO alternator manfacturer your stock alternator and they will rewind it to whatever current size you desire. Then when you get it back, it's just a straight replacement. So simple, even a moronic mechanic shouldn't give you any lip service to install. Lot of them are afraid of HO alternators.