I recently installed a new head unit. I forgot to disconnect the neg. battery cable and as I was snipping the wires from my old unit my antenna suddenly went up a couple inches and stopped. My keys weren't in or anything. I finished the install thinking nothing of it. When I tried to test the unit is did absolutely nothing and my clock above the dash was also blank. I checked the radio fuse under the change dish, but it was fine. Any insight into this problem would be great. Thanks!!!!!!