I recently received as a gift an old D-104 Silver Eagle. The date on the inside of the wiring diagram is 3/76. I installed a new mic connector on the cord. It is wired as follows. 1-shield, 2 white, 3 red, 4 black. I am attempting to use this mic with a Galaxy 88. I installed a new battery etc. The mic key up the radio, but does not modulate. When I hit the button it keys and un keys but no modulation. Someone told me that when these mic's get old the head of the mic sometimes needs replaced. Is this correct ? All the wires inside of the mic seem to have good connection. Any help is appreciated. Thank's in advance.
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