Brief description of the 4–20 mA throttle lever control system Special accessories: Connecting cable from electronics box to gearbox for triggering electric trolling valve Plugs at both ends, one of which must be removed. The output for triggering the trolling valve is 4–20 mA. 4 mA: 100 % slip 20 mA: 0 % slip 2m: 51.25449–0035 5m: 51.25449–0036 10m:51.25449–0037 15m:51.25449–0038 111