ok so here's the story. i got my MK 4 '99 Astra 3dr 1.8 from my brother the other week since he damaged the front end. Iv been doing bits of body work myself but today i took his rear bumper off to fit the standard rear bumper back on but at the same time i fitted my sterio (sp?) which went in like a dream and was working fine untill i put the rear bumper on then it just kept cutting out.
I thought nothing of it at first just thought it was the cd skipping but heres the problem i come to start the car up i get all my lights on the go off as normal on i try to get the car to start and it just cuts out and all the electrics stop working. Now this is my first car so im doing alot of trail and error but i dont want to start messing with the electrics doing this method and i was wondering if anyone has an idea what could be causing the engine not to start and the electrics to cut out each time i try to start it. Also when i came to locking it it locked then the locks just unlocked themselves after a few tries i got it to lock but im worried why it wont start as i had it running fine just after i fitted the sterio. Oh and the sterio is just standard Cd player with no sub or other speakers connected just the ones that was in the car to start with.