The Sunkeeper 6 can be mounted in any 1/2" knockout, such as in the junction box on the back of the solar panel, or in a standard breaker or disconnect electrical box. It may also be mounted to any surface with the included bracket and two screws. The LED light indicates that the unit is charging the battery. Simple lug connections or they may be cut and stripped for connection with wire nuts or barrel connectors. Instructions included. 5 year manufacturer warranty.