Join Date: May 2002
Location: East Coast
Thanked 6 Times in 6 Posts
Rep Power: 17
The FIRST plug (6 pin) to the right of the power connection is the external speaker plug but it also serves as a NEMA/GPS connector. There is an accessory 6 pin plug packed with the unit. The Center Pin is the speaker + connection and the farthest upper right pin is the speaker negative.
Should you wish to use the hailer connection there is also a 3 pin plug supplied for that...the top two pins are + and - respectively as you look at the back of the unit left to right.
All of this is detailed on page 46 of the owners manual which is available on the Icom site.
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