Having charging issues

Those do not need to be grounded, they should be OK through the engine brackets. I've never grounded either the roundback or squareback

What is the brand and part no. of that regulator, and where did you get it? It does not look familiar from that photo.

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Here's what you need to do..................determine if the alternator field has continuity

Do do that, disconnect your regulator, and hook your 12V test lamp to the two wires you unhooked from the regulator. Turn the key to "run". The light should go on. Go down and pull the field wire off the alternator. The light should go out.

Post back with results