1993 Isuzu Trooper altornator

if its like my 98. you will need a 12mm, 14mm socket, and a 10mm wrench. pull it on ramps if you can, disconnect the neg battery term. use the 14mm socket on the belt tensioner turning it clockwise take belt off. while your up there loosen top alternator bolt. go underneath take off rock guard held on with 2 12mm bolts. remove the 3 bolts on bottom of alt. (2 on the mount, 1 holding alt to mount.). Reach up and remove top bolt, turn the alt around(might have to wiggle alt to get it to come down). use 10mm wrench to remove big wire, then unplug the plug from back of alt.(might need plyers to pull plug out) remove thru the bottom. replace in reverse order