The Lock Right isn't electric its fully automatic. So it's working all the time, even when you're on the road.
It's setup to allow you to make turns and have the outside wheel turn faster than the inside. When you make turns you can hear a soft ratcheting sound as the locker slips to keep the drive line from binding.

It is a locker though so when you lift one wheel in the air all the power will go the wheel on the ground.

Lock-Right