Past few days my truck has been startin like the batteries r goin bad but I just figured it was the cold and I wasn’t waitin long enough to let the glow plugs up all the way. Last time I drove it was Friday. Today is Sunday and I tried to start the truck this mornin. DEAD. I drove work truck today and get home earlier and notice my parkin lights r on. But switch is off. WTH. Been a few years since I installed these batteries seems like. They r interstate batteries. But y is my parkin lights on with the batteries dead?