Hey everyone. Ive been playing around with an electric door lock actuator I got off of ebay and ive got a question: In order to maintain a position (up/down ->locked/unlockd), there has to be a constant supply of power to the lock in a direction ie + --> - locks, - --> + unlocks. Is this normal? Wouldn't such a constant power requirement drain the battery? I have a couple uses for these locks, first of all changing out the old vacuum elements and also using them to lock down my sub box so it wont slide around (ill post schematics later, im really excited about this design) but I need to know how to implement them without draining my batter. Thanks!