The radio antenna and the xm antenna plugs into one end of the modulator, the other end has a cable that plugs into the radio where the regular antenna cable would plug in. I have tried without this divice and reception just isnt there.OK read the instructions really not sure what you are trying to connect to the antenna
Funny how sometimes you have to run into a tree to see that your in a forest.The aux input cord is a much cleaner sounding solution for the satellite radio. MUCH better sounding in my opinion.
It is generally in or under the left fairing pocket. However, some dealers did not bother to install them. If yours is not there you can order it from Direct Line Parts (the sponsor of his board) or get it from a dealer. It has the stereo mini plug on one end which plugs right in to your satelite radio, or to an extension cable if you do it that way. The other end, if I remember correctly, plugs into a white connector, the connector is under the fairing pocket and not terribly hard to find. HINT: the pocket has push pins at all four corners. Push gently on the CENTER of the plug...doing that will let the entire pin unit come out..personally I'd order extra push pins when you order the aux cable.
If the dealer did not install the aux cord, it it may be in one of the pockets or even just wadded up under the left front pocket...I would check before I ordered a new one.
You did not say what power unit you were going to use, but you may find that you have a buzzing or whining sound until you install a ground loop isolator...available from Electrical Connection or other suppliers.
If you are just running on battery power, you won't need the isolator.
How are you mounting this.. just curious. I have thought of getting one as well and just not sure where or how to mount it.http://www.myradiostore.com/xm-radio-receivers/onyx-refurbished.html
I hope this is what you are asking for, My puter skills are not what they should be. But yes I am linking the receiver to the radio