Like any other car part, an alternator has to be properly installed and secured. In this case however, the car’s battery terminal has to be disconnected to prevent electrical issues. The previous unit can be accessed by removing the battery cables, unscrewing bolts, and removing the drive belt. An new alternator these days comes with it preinstalled to the engine and bolted down to the brackets of the engine. The he powers the belt to the drive pully connected at the bottom of the alternator provides a small amount of force which meets the requirements to guarantee rotated by the engine, not the opposite.Multiple components that were disconnected have been connected, turned the vehicle on, and checked whether the components connected the alternator operate as expected.