2014 Harley Street Glide The factory radio surprisingly provided us with a usable audio signal. Our modifications allow the bags to still look completely stock. The modifications and addition of the rear speakers still left plenty of room in the bags. The angled top of the Arc Audio Moto amplifiers helps them to fit under the fairing. Our analyzation of the stock signal was done with our real time analyzer. With some modification, the Harley speaker enclosures were made to fit the new Arc Audio speakers. One trick we like to do is to vent the rear of the Harley enclosure. We have found this improves the sound quality of the installation. We made a custom template to give us a perfect layout for the holes. The bags were painstakingly drilled to allow the sound to vent. All of our wiring is neatly bundled and secure for reliability.