Hogtunes HT-BTS-AA Wireless Bluetooth Receiver for Touring 99-13Hogtunes Bluetooth Wireless Controller For Harley Touring Trike The Hogtunes BTS AA adds Bluetooth technology to your bike VIA your factory radio AUX input. It replaces the factory ambient air temperature gauge, which was usually inaccurate, and only told you what you already knew. It's tomorrow's technology today for yesterday's bikes. Features: Easy plug and play installation w instructions Additional input for satellite radio GPS etc Ability to