70 Dart Stopped Charging

Grey and black are part of crackedback's wire mod and have voltage when headlights are on. . 2 wires to the right have voltage while car is running.
http://i197.photobucket.com/albums/aa294/Driver500/20140619_071031_zpsmucx2zbe.jpg
http://i197.photobucket.com/albums/aa294/Driver500/20140619_071045_zpsse3nohgk.jpg

http://i197.photobucket.com/albums/aa294/Driver500/20140619_071052_zpsthcsqbrx.jpg
I tested the wire going and and out of the regulator while the car was running and found voltage on both sides. It's loose now but seems like it was grounded to the firewall. I cleaned up the mating surface. There is a wire coming out of the firewall that end about 4" after exiting. No idea what that is/was supposed to go to.
http://i197.photobucket.com/albums/aa294/Driver500/20140619_071110_zpsluehikbk.jpg

This is the block next to the battery I was talking about. I don't know what it is, but when I tested it with a multimeter it didn't have voltage while the car was running at all the terminals.
http://i197.photobucket.com/albums/aa294/Driver500/20140619_071122_zpswu2fi8kn.jpg