I've got a 1990 Mustang LX Notch back with the 2.3l 4 cylinder. It's been running fine lately, but yesterday I ran into a problem. When I put the key in, I have all accessory power. When I go to start it, I get one click and the entire car looses power, but when I turn the key back to the "run" position, all my power is restored. The starter is only a month old, never had a problem with it starting until now. Only thing I can think of is checking the battery, replacing the positive and negative wires, and checking the ground from the block to the chassis. Thoughts?