Marinco 12VCP ConnectPro 12-Volt Charging and Trolling Receptacle and Plug for Trolling Motors. ConnectPro Plug and Receptacle 12VCP ConnectPro Plug and Receptacle ConnectPro Receptacle:The ConnectPro trolling motor plug and receptacle is a revolutionary new concept in trolling motor connections. The ConnectPro has superior electric current carrying capacity that eliminates problems that rob motors of power and reduce battery life. The ConnectPro system features locking plug and receptacle and spring clamping connection, which provide a secure electrical contact. 12VCP.