Howdy. I've been talking about my problem in the other forum (http://coloradok5.com/forums/showfl...5237/page/0/view/collapsed/sb/5/o/all/fpart/1) figured I'd crosspost just in case someone that reads here has input. Last weekend my 83 Jimmy K5 headlights got real dim driving home. Checked the dash volt meter, it was in the red down by 8 volts. Figured bad alternator. Next day bought an alternator and installed it. Also replaced battery with a new one. Still had the prob. Went back to store I got it from, it tested bad. They threw a new one on and tested it, it passed. Volt meter shown high 12 volts idle. Drove it around, seemed stable. Let it sit overnight, it still started the next day and looked good. Figured all is well. Girlfriend came home tonite with the truck and said it's back in the red. Went out and it was just above 8 volts again. Shut off the headlights, it went back up to low 12s. Any idea what I should try now? It has a new alternator and battery. Thanks.