I have an Icom IC-551D with the IC-PS20 Power Supply. I want to power the IC-551D from my 70 Amp power supply that powers all the other rigs. The power connector to the IC-551D is a 3-prong round plug with a screw-on collar. Does anyone have the DC power cable for the IC-551D, or know where I can get one? Thanks. Mike, W4UM