No electrical?

It will only stay running if I leave the battery charger on it or jumper cables, as soon as they are disconnected the truck shuts off. So if I try and get a voltage reading it's getting the voltage from the other car or battery charger. I'm bringing the battery down to the shop to have it load tested today. When connecting or disconnecting the battery I've done the positive terminal first and negative second. Sparks have happened but nothing out of the ordinary.

So, I found a couple blown fuses and replaced them, I then disconnected the battery and let the system drain completely, hooked up another almost new battery, and the truck fired up no problem. I now doscovered it has a miss under acceleration, the park break and ABS light is now on, and now my day time running lights and reverse lights will not turn on. Looks like I'll be busy for the next little while.

So I took the battery out and down to a different auto parts store and had them test it again. The first time I took it to AutoZone and the load tested it and said it was fine. This time I took it to a local small town store and they load tested right in front of me, the guy says at least 2 cells are bad. Picking up a new battery later after work. Will let you know how it goes.

No power inside truck what's going on?

Changed out the battery, started truck, checked voltage at battery with truck running and it was 12.0v.. Bad alternator. Replaced that and the truck runs great now. Thank you

Yes, I have power at the fuse box under the hood.

I have no power at all. Battery is fully charged. Nothing, terminal posts are good and clean, so are the clamps. I'm not sure where to go from here.

Thanks! You were right the positive battery cable I had replaced and everything came back to life! I love this site.