I recently had an immobiliser fitted professionally and fitted a new head unit myself. All was well, but the radio did not remember stations and the cd went back to the begining everytime, this I put down to lack of permanent power, so I wired the perm red wire to the yellow ignition only wire on the head unit (this was recomended).
This blew the 10 amp fuse under the dash (but not one on head unit) and has also left the car with no power to the starter motor, so now have nothing when I turn the key to start.
I know this is a bit long winded, but has anyone else had an electrical fault like this???
HELP