Like i said, it's your car harness which is F'd. You probably blew a fuse or fried a wire. Use a multimeter to check for voltage at the pins (on the car side) that would have 12v with ignition on and off.
Like i said, on the bench, put both wires to 12v(twist them together) and it should turn on, assuming you wired the black to ground already. That's the way it should be on the bench. The yellow wire is the main power, the red wire is just a turn on signal for the radio. When the red wire see's 12v the radio will turn on, but the yellow wire is where the radio actually draws power.