Patent attributes
A plug-in module circuit board includes a plurality of plug-in modules attached to each other side-by-side in a lateral longitudinal row. Each of the plurality of plug-in-modules has an electrical contact and each of the electrical contact housings has at least one outer surface with a latching structure, a pair of upper guide bores a pair of electrical contacts ad pair of locking devices in the pair of upper guide bores, and a common electrical voltage connection in communication with each of the electrical contacts such that each of the electrical contacts has a common electrical voltage provided thereto. One connecting leg of a light emitting diode (LED) is locked in one electrical contact housing and another connecting leg of the LED is locked in an adjacent electrical contact housing such that each leg of the LED has a different polarity voltage applied thereto.