Mercury - Remote Control Conversion Kit Mechanical Control Conversion Hardware 880095A12. This Mercury Remote Control Conversion Kit is a factory-style solution for converting select Mercury 20 HP FourStroke electric-start tiller outboards to a remote helm control configuration. It replaces the tiller handle and transitions throttle and shift operation to a helm-mounted mechanical control box, making it a practical option for boats moving to side-mount or console steering layouts.. Maintaining c