Abstract: Novel arrangements are disclosed that provide for replacement of printed circuit boards useful in regulating current for LEDs. In one embodiment, a conductive track is disclosed that forms a pattern for placement of electrical components. The track can be made out of any suitably conductive material and may be stamped, cut, or formed depending on the material type. The conductive track can conduct both electricity and heat. Portions of the conductive track can be removed creating a gap. Electrical components can be placed along the conductive track spanning the gap to create a circuit path. Other embodiments include wiring harnesses that contain embedded electrical components. The harnesses may occupy less space than some embodiments of the conductive track. An electrical connector may be provided to allow easy replacement of the LED.