How To Change An Alternator

Re-attach All Wires and Battery

Now that you have mounted your new alternator, refer to the labels you created earlier and re-attach the wires at the back of the device. Double-check that you are connecting the wires in the correct places; crossed wires can wreak havoc on a car’s electrical system. Once the wires are attached, you may reconnect your battery; again, check to be sure you’re connecting the positive cable (red) with its proper terminal. Do the same with the negative cable (black).