PIE MPSS-2 2-Channel Multi-Purpose RCA Audio Source Switcher Part Manufacturer: PIE; Part Number: MPSS-2; Boat Manufacturer: Chaparral; Part Number: 44.00040; UPC: 707751841110 Will automatically switch between two RCA sources, whether radio, CD player, or other auxiliary device 2 channel automatic switching Sold as seen in pictures; Note every computer shows colors differently; All measurements are approximate; Hardware and instruction/installation manual not included