Rep Power: 0

I left the lights on in my Honda Civic ('95). I got my girlfriend to help me jump it but I didn't pay close enough attention and the black wire on her car battery (BMW) is actually positive. So i rigged it up backwards and burnt the fuse for my battery (yeah I know what an idiot ). Anyways I replaced the fuse and everything works fine except that my in dash clock always resets to 1:00 when I turn on the car and my stereo didn't work anymore. Presuming that I fried the stereo I bought a new deck and installed it but it didn't work either. So I investigated all my connections with a voltmeter and everything was good but I discovered the +12 Volt Battery Wire is only pumping out about 4 volts. The ignition wire still pumps out over 13 Volts. So my question to you all is: is there anything else I can do myself to determine the cause of the low voltage, or should I just give up and bring it in to the shop... thanks yall

 
Rep Power: 812

its possible the battery wire itself got fried internally even tho the fuse blew. may have been too late. so you might have to just replace the wiring.

 
Rep Power: 0

Actually figured it out, was just a blown backup fuse, thanks for the help

 
Rep Power: 291

yep, the infamous 'backup' fuse.