music??? help

Hey i have 2 twelves and an 400 watt amp in my car.... i took the system out for awhile and decided to put it back in today... i hooked up everything the same way i took it out and now nothing works...the cd player doesn't even work... anything i have to do to reset the system or something? any help would be appriciated.

I just went outside to drive and realized that the lights in the sunvisor don't work either... could i have blown a fuse or sumthing?

quite easily could have blown fuses...

Or you cut a wire you shouldn't have.