Ok, Let me see I I get this right.
The way I have it hooked (which is wrong) up currently is one lead of the high and low a/c power grounded to the frame and the other high low leads hooked up to what should be a pair of hi or pair of low leads at the rectifier.
The tang is just a common ground for the high/low coils when you are running a/c to accessories.
I need to cut the tang off and figure out which wire is the end of the high and low coil.
I see now that floating ground means literally. The only "ground" is at the negative terminal of the rectifier and it floats independent of the frame.
Thanks wayne... You rock as all ways.