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That AUX jack is for an MP3 player. It is not a headphone jack. I suppose you could rig one up by coming off one of the stereo speakers. You can run an MP3 player through the auxiliary and plug your earphones into the mp3 player, but it might be a little weak in volume....
Somebody is making an adapter that goes from 7 pin Harley plug to a 1/8" stereo headset. I saw a guy with one, he said he got it off ebay. I have an electronics shop looking for one for me.
I have an 05 RG that is the same as the SG stereo setup. There is no headset output from the radio. At least I can upgrade the radio for about $1000 or so to get the CB and headset plugs. Otherwise you need to put in a plug yourself. I have the speakers that polecat is referring to and it is good but my MP3 isn't very loud at highway speed. When I get a little more time I will wire in a jack for my headset and speakers.
HD didn't think this through unless some states don't allow the use of headsets. CA only allows one ear headsets. It should at least be there for those of who want one.Good Luck
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