From doing research, it sounds like it is the ignition switch in the steering column. It has all the symptoms. This morning she was dead, no electrical activity at all when I turn the key. Nothing in the rig works. That's a ignition switch, I'm fairly sure
Optima tomorrow, I do have a fused link, 25 Amp, and I replaced that. And the fuse box. I have a new positive cable to put on but my link is a flat connector, the one on my new cable is round so I have to work around that.