Here is a pic of a GH-005 install of a DMS3 ( the pic is only of the same chip as shown as above. Notice you can't tell where the "Y" point goes. I can account for all the wires on a DMS3 except for the green wire shown in the pic above the chip. I would say that was the "Y" point but the wire goes throught the board and I can't tell where. Also, I can't find the install diagram for the DMS3 and this board.