This is a DIY on replacing your alternator on a Corolla . The first thing you do before working on anything electrical on your car is remove the positive side of the battery . Then you remove the top nut and then you have to remove the cover underneath your car and then you loosen the bottom nut that is screwed into the adjuster block . You don't want to remove that bolt until you loosen the the alternator from up top or else the block will turn freely . Then with the adjuster bolt you loosen the alternator until you can remove the belt . It was easier to remove the windshield washer container so the top bolt could slide out . You can see the adjuster screw and block once the alternator was removed . Make sure you match up the alternators cause there are two types for this year vehicle . Before leaving the store have them test the new one . It is not common that sometimes the new ones are not working . Then you put everything back the same way you removed the alternator , Make sure you adjust your alternator belt then after that you can connect your battery . Make sure your battery is fully charged before you connect it , A half or dead battery can damage your new alternator . because you will be making it work harder and sometimes a surge will slip through . . For More info - www.corollacarclub.proboards.com or http://rinconrolla98.blogspot.com/ .