I recently replaced/rebuild the alternator on an old 72 Volvo Penta, all the wires are label except for 2, the black and red, I have the blue wires on D-, the thick reddish on B+, the green on DF, and a black on 61, I have noticed on the old Volvo's that the green means ground, I didn't pay attention on how I took them off, so if anyone could help thanks.