Stuck in a Walmart parking lot in Tracy California. Rig won't start. It started and ran great, drove from San Fran to Tracy. Stopped for gas and when I got back in, it labored just a bit like the battery was being drained. I came to Walmart and came back out and it won't start. Tried jumping it, replacing the battery, cleaning the connetions. I beat on the started a tad to see if that helped. It won't crank and it doesn dim the headlights when I turn the key. I get one click but that's it. Any ideas? Wondering if maybe it's the fusible links, but don't really know how to diagnose or bypass/fix it to get me home to Texas. A quick fix would be nice so I can labor it home. Please help!