On the U891RC, what are the different cables for?
For the audio output of the microphone use the following Red – signal negative Yellow – signal positive Uncoated – ground For the contact closure use the following Black – ground White – remote contact Blue – remote contact The TA5F connector is wired as follow Pin 1 Thick white or black cable plus thin black cable Pin 2 Yellow cable Pin 3 Red cable Pin 4 Thin White cable Pin 5 Blue cable