No 12 volt cut in that I can see. The issue wasn't the regulator heating up while parked..ie, the ignition switch sending it power when it shouldn't. The hot temperature of the regulator occurred while driving. What would cause that?

On Day two of being a first time M37 owner, I took a 10 mile drive to show my Brother my proud purchase. Parked the truck and noticed a smell of something being real hot. Popped the hood and after investigating narrowed it down to the regulator. It was Very got to the touch, 15 minutes of BS later, ...