i finally got around to hookin up my new headunit. now, i am definately not a professional but ive done tons of headunits for my family, friends, myself, etc. but the problem is, this time i have no power at all to my headunit. i checked for a bad ground and thats not it. i made sure the power connections were good. could it be the harness adapter? ive had it in ther about a year. i dont have to buy a new one every time i put a new cd player in do i? i just have no clue where to go to look for the problem. im assuming i need a voltmeter to find out if my car's wiring is faulty. anybody have any suggestions?