I was connecting a wiring harness for a steering wheel interface and after I got done my speakers weren't working. The subwoofer and head unit work. I think I might have disconnected the ground at the head unit momentarily trying to make the connection. Fuse maybe?

 

Did you actually disconnect the battery this time? Check your fuses...#s 1,2,23,34 are all related to radio and it's accessories, might be more though.
What kind of steering wheel interface did you put in? Probably didn't connect something back to the head unit.

 

Flippin' hilarious. I knew it was a fuse somehow. Turns out, I'd been there before. Can't wait til this is done. Will get back with the solution. Nice catch.