HERE IS A BRASS N SCALE SIGNAL WHICH HAS BEEN CONVERTED TO LED! ALSO INCLUDED ARE TWO DIFFERENT RESISTORS TO CHANGE THE BRIGHTNESS OF SIGNAL; THERE IS A 470 OHM RESISTOR ALREADY INSTALLED IN SERIES WITH THE SIGNAL (shrink tube in last picture)! I USED 12 VOLTS DC TO POWER! PLEASE ASK ANY QUESTIONS YOU MAY HAVE AND THANK YOU FOR VIEWING THIS AUCTION!