How do you replace the alternator on a 1993 Isuzu truck?

Hi, FIRST take the ground off the battery!! Then loosen the belt and slip off look at the wires on the back-if you can remove them do so, if not remove the adjuster bolt and pivot bolt and position in a better place-the heavy wire is the output wire-if it's loose your alternator may be good. Unplug the regulator connector and bring to a parts store to check. Good luck