Replace the rubber boot and plug the light back in. Turn the lights on to check the right headlight. Turn them off. Repeat this procedure for the left headlight, but first remove the battery hold-down with a ratchet and socket, then remove the battery. Start by removing the negative cable first, then the positive.
Any device that violates the first or second law of thermodynamics is called a perpetual-motion machine. If the device violates the first law, it is a perpetual-motion machine of the first kind. If the device violates the second law, it is a perpetual-motion machine of the second kind. Reversible Processes
This process requires energy, and organisms use the energy of the decaying sun (which, of course, also obeys the second law of thermodynamics and tends toward decreasing concentration of energy -- A Cosmic Perspective) to oppose the second law within their own tissues by concentrating energy in their own bodies.