Hi, im in need of some advice. i have a 2006 vectra sri 2.2, ive fitted a ripspeed dv720 head unit and i had 2 get an iso connecter to fit it. i need to get the power running off ignition as apposed to permanent 12v that its got at the moment. does anybody know wat colour the ignition wire is in the car?? can i get to this wire from audio harness? also i have the illumination wire that needs connecting but dont know the colour on the car???