First off this forum is more addicting than . . . well . . . something addicting (insert your other addiction). I love all the help offered here. Now for the good stuff. When I turn my lights on with my scout at idle they do fine and no problems. However, when I rev up the engine the amp meter guage begins to jump back and forth and simultaneously all the lights begin to go bright and dim in sync with the guge needle. But when I push in the glow plug "trucky" button it stops and they do fine. (yet another use for that astheticaly pleasing "trucky" button) Is this an internal alternator problem or loose belt or what? Any help would be appreciated. Thanks.