I had the same thing happen several years ago. On your battery positive post are two leads, a thick one and a thinner on that runs to the fuse box just behind the battery (85 22r). In my case that lead had corroded at the battery terminal. A bit of cleaning, re attach, and its been good for years. For your sake I hope that is what it is, cheaper than a new alternator. <img src="/forums/images/graemlins/patriot.gif" alt="" />