The LED light source comes with installation instructions for the FiberLite Instrument Light Bezels, a resistor for connecting either 14V or 28V (as specified by your order) and a connecting ferrule for the fiber optics that will accommodate 1-2 FiberLite bezels. If you are using more than one light source it is best to wire in series. Wiring in series will require a different resistor value. If this is the case, it is best to call us and tell us the voltage, how many LEDs you will be using and the number of FiberLite bezels you wish to connect to it (5 maximum). Please call us at 562-776-9494.