I just replaced my old alternator with a 80 AMP one thinking i didnt have very much power from the old one. It turns out it didnt help much.
I figured out the reason is that i have a power pully on my crank. The smaller diameter makes the alternator creat less power than normal. about 20% less Your alternator gauge will be low and lights dim.
The sloution everyone thinks is getting a 130 AMP alt. (Be carefull) I've seen 2 or 3 fox body mustang alternators caught on fire, becuase the harness being melted. So carry a Extinguisher
