<b>DC 12V Prewired LED Diodes. Prewired with built in Resistor, 20000 hours+ Lifespan.</b><br><br><b>* Colored Wires - Easy to distinguish between Anode or Cathode</b><br>- Aonde: Colored Wire<br>- Cathode: Black Wire<br><br><b>* Prelocaled 0.25Watt Metal Film Resistor</b><br>- To make LED work more stable at 12V circuit.<br><br><b>* 7.8in. 7-Core Pure Copper Wire Lead With Tin-Coat At The End</b><br>- Easy to welding.<br>- Excellent electrical conductivity.<br>- Moderate wire hardness and aging resistance.