for some reason, this truck has been a battery killer. ones I bought it with lasted 2 years. a set of interstates made it 2 years, and now these napas are 2 years and 3 months old and im starting to have problems again. I noticed below about 40 degrees it starts pretty slow. Just tonight, I pulled both window switches up to make sure the windows were shut before I left the truck, and I noticed the headlights dim way down and the voltage gauge went down. truck had been running for about 25 mins and was up to temp. All cables are tight and no corrosion. One thing that did cross my mine was whether or not I chose a good ground location for my battery on the frame?