'94 Safari Kalahari radeo install screwup

So, I'm Kevin and I recently bought a '94 Safari Kalahari. I was trying to install a cd player and I have shorted out something and now my rig wont start. Long story short, I think I ended up supplying battery power to the ignition circuit through the power antenna wire. I know. I'm sure that I have really messed it up. I have a 454 chevy. Any help appreciated