So I need to install an inline fm modulator for my XM SKYFI2. I don't know if I need the amplified version of the antenna adapter or just that standard one and if I do what do I connect the blue wire to

? I searched around but could not find an answer.
Thanks,
John
Amplified
Euroantcomplete2 - eBay (item 350293116987 end time Jul-11-10 21:48:36 PDT)
Non Amplified
Euroantcomplete1 - eBay (item 390199540186 end time Jun-21-10 10:12:44 PDT)