The following schematic shows the TM-1 Mic Adapter Radio Interface Cable Wiring Diagram. The adapter provides a convenient way to connect to the various mic lines without the need to cut or splice any existing wiring. The Mic Adapter is simply inserted in-line between the radio and the microphone. The cable already has the RJ-45 connector installed on one end, so you will only need to install the 8-pin round connector on the other.
Get more information on how to connect the TM-1 Mic Adapter Radio Interface Cable Wiring Diagram here: http://www.tigertronics.com/files/micadap.pdf