Since your acc isnt even doing anything or the things that work without the key like power seats then its a main power problem. id say either: 1. your battery is dead somehow or 2.your negative terminal has a prob or 3.the negative ground wire is bad. also if thats all good 4.the power supply wire that goes to the fusible link (which is responsible for distributing power thoughout the car) has shorted out. or 5. one of the fuses in the fusible link went bad if u hadnt checked that.
The manual is a blessing when it comes to checking electrical theres an online one on Zdriver.com if you dont have one. make sure and take out a fuse and use a test light (sending power thro one end) to check it becuase sometimes the break is so small you can hardly see it. really look into your battery first tho
