I have a adapter made by Kenwood, that allows me to connect a 6-pin mic to a 4-pin mic connector. I use it on my SB-101. It's only about 2 inches long. The shell opens up and there are quick-disconnect wires inside for reconfiguration. I bought it a long time ago, but you may be able to find one on Ebay.
But, as SWMAN suggests, make sure you know what kind of microphones, you are using. They sometimes require a little more than just a wire adjustment.