Originally I tapped into the cigar lighter. Just recently I ran the wire to the accessory plug in front of the battery so could control the Sirius and radar detector from the accessory switch on the panel. Keep in mind the power supply for the Sirius is the plug that you plug into the cigar lighter! If you cut the wire and tap it into 12 volts you will fry the Sirius. You can get a socket at the auto parts store, tap that into the cigar lighter behind the fairing and plug the Sirius into that. Zip tie it up good and your set. Do a search on Sirus install here on the forum, several people have done it. Good Luck.