After blowing my new engine rebuilt rex i have been going out of my mind working out what could have caused it. I have now come up with another possibility.
Is there a way that the head unit could have been wired up so that it may draw power from the ignition circuits. I have a pretty powerful system but until now just assumed it was seperate. Then i remembered that i wired it up to the cables under the steering column. This is where i got my ignition live and permanent live from.
was this a bad mistake to make?? at the time i couldnt see anywhere else to wire it to
were did your std head unit wiring go dude ?
it was in a mess when i got the car, but there was no hea dunit attatched, so i cut it all out and started again
i would concentrate on finding it it will be there somewere it could be shorting out against something !