A system with a pair of flange extrusions and a base extrusion having a channel for electrical leads and lighting. A preferred embodiment has a base extrusion of polyvinyl chloride (PVC) of 89 98 Duro on the Shore OO scale. The base extrusion is connected, on opposite sides of the channel, to a first flange extrusion and a second flange extrusion of PVC with a hardness of preferably of 90 Duro. Electrical leads are placed in the channel. A lens is inserted into the channel over the leads. A replaceable LED module having a circuit board secured to a module base is attached to the leads. The circuit board preferably has a gasket or seal, an LED and two contact teeth that make electrical contact with the leads.