vauxhall corsa c 1.2 sxi starting problemS? help?

basically car was starting fne then i took apart a few things in my eletric box coz i had a wire burn out i took out the body control module and then plugged it back in about an hour later battery was still connected at this time though dunno if it akes a diffrence. butits starts for about 5 seconds less sometmes (dash lights dont even have tim t go out). and then it cuts out. does anyone knwo what this could be?????