Okay, after surfing this site for months, and learning all kinds of info, I think I have finally stumped myself. I replaced my starter about two months ago and have not had any problems. This morning, it wouldn't start. Battery is reading 12+ volts and when I jumped it off the wife's Sequoia, it started, albeit hesitantly. Once running, the battery is pushing 15+ volts. When I would flip the lights on, the radio would cycle off and then back on. Once I drove about 20 miles to work, the radio wouldn't do that anymore, but it failed to start again. So, the battery is good, the contacts are tight, the alt is charging. Does anyone have any idea what I might be dealing it?