A LED light apparatus is designed to being connected to an external power source via a host connector. The light source has a LED light source, a light housing, a driver circuit and a plastic device connector housing. The plastic device connector housing has a receiver socket for detachably receiving a corresponding plastic plug of the host connector. When the plastic plug of the host connector is inserted into the receiver socket, metal terminals of the host connector engage elongate flat front ends fixed to the plastic device connector housing.