I recently took out after after market HU to put back in the stock one in my 1999 cavalier, to sell my car. I had the old harness and hooked all the wires back up to the same colors. But, when I go to turn on the radio/start the car the clock will come on for about three seconds and then go out with nothing else showing on the display. If i click in the main power dial the clock will show up again for about three seconds and then go off. Is there a wire I hooked up incorrectly or is it something else?