just installed new optima red top battery and the car wouldnt start and now i have no power at all! alternator works,optima has12.5 volts and i checked all the fuses i could find and still nothing,wtf, any help would be great

 

I'm going to have to assume that it started before with a different battery, right? Have you tried installing your old battery? A couple of things to look at here....maybe the new battery is dead or your terminal connections are either loose or corroded.