Ha ha ! I bet you thought i meant electric locker didnt you? No my friends, im talking about the one that you push with your left foot , or pull with your right hand(the lever). Ive b used this method to lock the axles on many vehicles, from rear wheel drive trucks to front wheel drive cars by using the brake pedal, and its proven itself to be effective about 85% of the time on a variety of conditions where wheel spin is involved. Its a little harder on a foot activated lever but sill possible to do most of the time, and it may not be the greatest thing for rockcrawling, I dont know. However, i never see or hear of anyone who does this. Anyone out there practice this method? Ever break anything?