Plasmaglow LED mud flap kit installation w/reverse lights. How do I wire the reverse white LED's? The red LED's plug into the 4-prong trailer light plug but the reverse white LED's need to be hardwired how and where?

 

easy method, piggy back connector to the reverse light wire in the tail light assembly. More protected method, bring switch power from cab to a relay from relay to LED. Then use a piggy back connector to connect to reverse wire (in cab or taillight) to trigger the relay.