Stereo/electrical problem

[S_Levatino]

So yesterday I was connecting my new 850 cca battery because I had only a 425 cca battery and I plan on putting in a sound system in the future plus the car had trouble starting when hot and and I was talking to someone as I was replacing it and the positive accidentally touch the negative for about three to five seconds (still my fault for not paying attention) and I saw a cloud of smoke and then I noticed the wire burnt off the starter solenoid so I replaced the solenoid (had a new one in the backseat since I replaced the radiator and starter the night before) and crimped a new endlink on the wire put the nuts back on and it started right back up. Problem is that it blew the fuse in the #4 spot and the one inside my radio. The only one that would go in the #4 spot without blowing the second I put it in is a 30a (supposed to be a 15a) then replaced the radio fuse turn on the radio and it makes a horrible noise no matter the volume level. I'm assuming I shorted out another wire as well if anybody could give me some info as to what I messed up I would really appreciate it thank you in advance!

 

[Irish Pride]

First things first - http://en.wikipedia.org/wiki/Punctuation

What does the #4 fuse go to? You have a short and need to trace your way thru it. Check the wiring to whatever goes to the #4 fuse for a ground.

 

[S_Levatino]

First things first - http://en.wikipedia.org/wiki/Punctuation

What does the #4 fuse go to? You have a short and need to trace your way thru it. Check the wiring to whatever goes to the #4 fuse for a ground.

Yea sorry I'm not so great at that, pretty sure its for front illumination (which went out), parking lights, and a sound signal or at least that's what i could dig up off the internet since I don't have owners manual.

 

[TimboSHO]

First remove 30 amp fuse. If you run twice the amperage through a circuit than it's designed for, you are going to cause more issues soon. Then, find out where the circuit goes and find out where the wire burned through (most likely the insulation is burned off and the wire is shorted to ground).