Well, I've been driving the van for the past couple of days with no issues... Yesterday the wipers didn't work when I drove to work in the morning but they started working on the way home!
The voltage has been holding steady between 14.5 to 15 volts! I had mentioned before that having the blower on and lights was bringing the voltage down to 10.5!!! With that bypass in, the voltage has been steady at 14.5 volts! The voltage did drop for a bit at idle with the blower and lights but went back up in drive.... Maybe it has nothing to do with the overcharging problem but thought I'd mention it anyway...
I'll be back in a few days to post my findings in the wiring!