01 blazer brake and reverse wires

yep, i got an 01 Blazer, now I need a break wire for the alarm and dvd deck, and a reverse wire for the reverse camera. can someone tell me where I can tap into a wire that has these positive (i guess) voltages, location and wire color, the easier the better. ThanxxxBrain

The brake wire is either white or blue. You should be able to get it at the switch attached to the top of the brake pedal. Reverse lights on GM is generally light green. Probably somewhere under the driver's dash, not really sure where. Does your Blazer have an auto-dimming mirror? If it does, there should also be a reverse-light wire in the harness going to the mirror. It's there to turn off the auto-dimming feature when you're backing up.