Mercury - Platinum Plus Throttle and Shift Cable 10 Ft Mechanical Engine Control. The Mercury Platinum Plus Throttle and Shift Cable is designed for Mercury mechanical control systems where smooth, predictable response at the helm is important. Featuring Platinum Plus construction, this cable provides a direct mechanical connection between the helm and engine while reducing internal friction for controlled, natural throttle and shift movement. The 10-foot length is well suited for compact consol