I am hoping someone can give me a little advice. I recently purchased a nice power adapter..1500 watts and I would like to hook it up in my 98 Chevy truck. Be nice to always have power. My truck has a spot for an extra battery that I would dedicate to this adapter, but I am curious how one would link it up to the alternator so it would charge while driving. I would like to have both batteries charged from the same alternator, one for starting and car operation and one for AC power. Any thoughts?