Voltage problems, cutting out when hot

.4 ripple sounds awful high to me unless that was at full output at 116A. Not too sure what would be acceptable at that power

I have no idea what .4 ripple means...

Mattax, funny how close his charging issues and voltage readings are to mine.

“Also
use aligator clips and see if the voltage at the regulator drops or increases with higher rpms.

To hunt for the voltage drop.
While running, measure the voltage between regulator ground (attaching screw) and the battery neg post. This would show bad ground connections.
Then measure voltage between alternator batt stud and regulator feed (blue). This shows poor feed connection (most likely the biggest issue).”

I’ll be chasing this again, great read.
Definitely helps to understand voltage drops and current.
This all really helps. Thank you.