- When Energized, the Locker only pushes the Shaft Out, it's not spring loaded and the Rear Diff automatically pushes it back in when not powered up. Normally the Rear Diff is in 2WD, when activated it Unlocks to 1WD known as Turf Mode.The Early Model has a White Plug End, just add/Splice in your wire and Plug End.Works on HiSun and Odes 550-750-800-1000 Rear Diffs Locking Rear Diffs.