Step 1: Secure a new alternator for your truck from an auto parts repair store.
Step 2: Disconnect both battery cables from the battery. Remove the negative or black cable first and then the positive or red cable.
Step 3: Remove the wires and cables on the back of the alternator. Press in the latch clip on the electrical connector that fits on the voltage regulator and wiggle it out.
Step 4: Use a wrench to loosen the locknut on the positive battery cable and pull out ring terminal outward and off of alternator. If you don’t have air tools, use an adjustable wrench and carefully remove mounting bolts.
Step 5: Take out old unit; install new one with reverse order; securely
Here are the best methods that our techs have recommended for all of our repairs.