mpg0101

Is the power block showing blown fuses or any electrical arcing. If you have the old one look at the bottom and see if there is any melted material around the post base or coming from under the top rail. Blueish discoloration is a sign of arcing. Check your grounds. Passenger wheel well, passenger frame engine compartment and one going into the fire wall about top center. I would also have the battery tested under load. A ground issue can be intermittent but will continue until you have them clean and tight. I had the same thing, and it didn't resolve until I cleaned and reattached the wheel well ground. Good luck!

Back by the spare tire, Drivers side there is an electrical junction bar that holds multiple plugs. If you don't already have cargo lights in the bed the plug to the far right/passenger side will have a dummy plug in it. You can remove that and use it for what you want, and it will be controlled by your cargo lamp switch in the cab.

Okay. That makes more sense. I saw a black cable and my mind thinks NEG. It was loose after a battery was replace months ago. I guess it could have done the damage at that time. Truck ran fine after the cable was secured. It just recently started dropping overnight. No other issues. Thanks!

What would cause the post that the ground connects to the Power Distribution Block to get hot enough to melt a hole in the top of the battery? The ground wire is not damaged or burned that I can see. No fuses were popped. I never saw or had any indication of any problems until my truck wouldn't start after sitting all night.