Not Charging, pulling my hair out.

Yeah, the regulator is grounded (has a ground wire from the case, direct to the battery).

I'm just gonna limp it over to my shop in the morning. I pulled the Marine Grade 65N Series (850/1000CA) Battery out of the compartment under the bed (was/is my dedicated Winch battery) and installed it in place of the Primary Battery to run the truck.

One nice thing about that monster Marine Battery, it doesn't matter if it's charging or not, it'll power something for a long time (have used it to drive vehicles that didn't charge, in the past)

If I get it over to the shop, I can do a lot more than I can with a few hand tools, a multimeter and swearing. :D