Not Charging after Madd bypass.

I see your point @French demon. When I restored my 69 Barracuda the first time in about 1994, I was under the dash and accidently crossed the hot post on the ammeter gauge to a post on the gas gauge with a wrench. I toasted the fuel gauge. That is when I learned two valuable lessons.
1) Any time you are up under the dash, disconnect the battery.
2) There is a hot 12 volt wire up under the dash just waiting to ruin your day.