I'm having random no start/not turning over, like battery completely dead problem with my '04. When I get in and turn the key, absolutely nothing. My mechanic son said jiggle the positive power cable coming into the Fuse and Relay Panel with the key on and you should hear a click and then try to start. This works but I'm wondering what is the underlying problem. The connection is clean. See photo. It is happening more frequently now so anyone else have a similar problem?