Hi, I have a 1993 buick regal, I am trying to install an after market stereo, the stereo is not powering on when I turn on the car, the manufacturer said the stereo is probably not grounded right.. I matched up and connected the ground cables ... what more can I do?
Check d power behind d radio make sure you have 12 volts at d red wire and d yellow. If you don't have power check d fuses.