Urgent help needed with wiring
 

Hi guys,
I was re-wiring my headunit to my headrest monitors today and while doing it a red wire sparked on the metal work and took out my headunit.
This is the red wire:
http://i42.tinypic.com/10wlf79.jpg
It is fairly thick and appears to be a power supply cable but was not attched to anything and had a bare end. It was located underneath the centre console/armrest and runs from the dashboard area..
This cable no longer has power to it so im assuming the head unit and the cable are running off the same power feed.
I have tested each fuse under the bonnet and they are all fine.
The head unit appears to have a permenant live still running to it as there is a small red light on the side of it but it will not turn on to normal operating mode.
Can anyone help or shed some light on how i get this cable and head unit working again.

spent the night hunting for signs of where this problem is comming from and found another fuse box behind the dash (didnt know this was here) and foun d burnt out fuse... problem solved. still not sure what the red wire does though.

Might of had a dvd player mounted in the center console at one point.

None of those are factory wires. Should be empty under the armrest bucket.

Yep, thats exactly why I said DVD player. Looks like there is a S-Video cable in there and possibly an ipod interface.

I need some help with trying to find out what fuse I can tap into in order for my train horn compressor to operate with the key in the on position?