<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><div style="direction: inherit;">Normally, the wiring for the 16 pin connector that works with the URI is:</div><div style="direction: inherit;"><br></div><div style="direction: inherit;">RX</div><div style="direction: inherit;">pin 7 Ground</div><div style="direction: inherit;">pin 11 RX audio </div><div style="direction: inherit;"><br></div><div style="direction: inherit;">TX</div><div style="direction: inherit;">pin 3 PTT</div><div style="direction: inherit;">pin 5 Flat TX Audio </div><div style="direction: inherit;">pin 7 Ground</div><div style="direction: inherit;"><br></div><div style="direction: inherit;">Complete guide (not Moto, but well-researched and translated for easier understanding):</div><div style="direction: inherit;"><a href="http://www.repeater-builder.com/motorola/maxtrac/maxtrac-option-plug.html">http://www.repeater-builder.com/motorola/maxtrac/maxtrac-option-plug.html</a></div><br>--<div>Bryan WB0YLE</div><div style="direction: inherit;">NJ/PA Asterisk Association W2FUV</div><div>Sent from my iPhone 6S.<span style="font-size: 13pt;">..No electrons were harmed in the sending of this message.</span></div><div><br><div><br></div></div></div></body></html>