Alright my lumina has a LOT of problems.. not to note that i JUST had my starter changed in Aug and alternator in Sept. Just a little while after my alt went out and had it replaced.. my power lock doors dont work.. i have to do it myself.. whats the deal? did i blow a fuse? or what? another prob i have is that my rear defrogger dont work either. probably went out same time as the locks or thats when i noticed it.. I found the book to the car to find where the fuses were. the thing says the componet center is behind the glove box.. um ya i took that apart but still dont see anything.. well i really dotn kno what im lookin for.. hmm i need some help please.. I drive a 93' Lumina Z34... if anyone can help that would be greatly appreciated.. thanks a lot!

Lots of info you need at autozone.com/repairinfo.

Look at the wiring coming off the starter, primary power for big amp items comes from there. Sometimes they burn through.