Features:<br>100% Brand new and high quality.<br>This pre-wired led has been connected a resistor(1000 Ohm) in the prewire.<br>The red wire is anode and the black wire is cathode.<br>These pre-wired LED bulbs are perfect for creating your own custom LED setup!<br>Use them to make headlights for your cars and trucks, wing lights for your planes.<br>These pre-wired LEDs are very helpful props for model train Layout and building, train station layout ,school project model ,car,and miniature dollhouse.<br>Specifications:<br>Brand:evemodel.<br>Size:5mm Led, The wire about 20cm(L)<br>Forward voltage:12V~18V(1000 Ohm resistor in series),DC Compatible.<br>Forward current (typ/max): 20mA/30mA.<br>Light Color:Bright White.<br>Package included:20pcs Pre-Wired leds.