Hoping you can help me here guys. Put a new battery in my g/f's car...03 sentra SE-R spec V...little rice mobile but its ok for her. Anyway, after i get everything hooked back up....no power to the had unit. Nothing happens. I pulled the fuse box and checked fuses and theyre fine. Where should I look next?

 

check under the hood and in car for fuses, some cars have multiple fuses.