Driving Lights Carrier, Part 5450300 is the powered digital signal processor. Sends power to four speakers. It is designed and tested by Indian Motorcycle Engineers to ensure quality and durability through tens of thousands of miles of accumulation, electro dynamic shaker testing, and road generated inputs. Spend less time doing tedious maintenance and more time exploring what the roads have to offer. As a brand that started in 1901, don’t settle for anything less than OEM quality. This Accessory is Designed to Fit the Following: Indian Motorcycle , 2017, 2015 Roadmaster