My 2003 Supra Launch SSV wake plate gauge has starting working intermittently. I have narrowed it down to the wires coming out of the black box under the dash that go over to the gauge. The part number on the box is Beede p/n 710617. I have heard the new gauge does not have the black box and all is built into the gauge. Does anyone know the part number or where to purchase a new one? Thanks