Looking at the Hardware configuration it says that they have made things a little bit more complicated Kenwood have changed the layout of the Mic connector during production and there are two different configurations. New radios with serial number from 70600056 are using Configuration type 1 and older radios with serial number below are using configuration type 2.I was using before.Serial number: 50800717Serial number: B5400074Not sure how to configure jumpers for replacement kenwood 480 sat73s