I don't know exactly how JBJ wires their lmoon lights up nor do I know where and how they get the required voltages to drive them., but your original problem sounded like you had a bad connection or switch...Moon lights (LED's light emitting diodes) to some folks are nothing more tha a tiny light bulb, but they are not a light bulb. They are dependant on polarity, and if your wires were crossed during installation (once again I do not have a lcue what wires are used by JBJ or if they have different colors to depict fan feed from light feed) the LED's have to be hooked up with the right polarity. Try swapping the two leads that feed the lights around and see if that works. Do you have a multimeter? You should have 3.5 vdc at them ? Kind of hard to trouble shoot electrical stuff without a pic of how its wired, or if the person doe snot have a multimeter to check for power at different points, as its all togethe r possible you may have a faulty component even though it may be new...Like I said I have not seen the wiring inside a hood on a JBJ, but circuits are circuits, and if JBJ used a like plug to wire fans a well as the LED's thats a big nbo no in the electrical setup as things should be wired so you can not plug compnenets with a different source or amunt of power into other things so easily. Fans normally take 12VDC, leds need approx 3.2 to 3.7vdc and normally incorporate a dropping resistor to drop a common 12 vdc power source to required voltage and current draw.
