Hey guys, hope someone can help me with this. I just put new 5 pin plugs on a set of 7 pin headsets, and it all works except intercom. when i turn up the i/c i can hear a kind of static but no mic action. when i turn on the cb i can hear a faint pop when i push the ptt. nothing from the mic though.i have tried reversing the positive and negative mic wires, nothing. can't find a good diagram on the intercom. have a good diagram for the headset.