Abstract: Piercing, heat sink, and reflector modules are detachably connected together to provide a lighting fixture adaptable to low voltage, line voltage, halogen, fluorescent, incandescent, and other lighting systems. In heat sensitive applications, such as insulated ceilings, a heat conductive basket sleeve is disposed around the heat sink and reflector modules, and the sleeve, heat sink module and reflector module are enclosed within a heat-sealing cover. Heat from the sleeve is conducted to a trim ring externally disposed on the lighting fixture. The lighting fixture permits direct connection to a continuous insulated cable without the requirement of a junction box connection, thereby facilitating installation of the fixture in either new or existing construction.