Load Resistor Recommendation for Use with LED Tail Lights on a Flat Bed Truck with Hyperflash

Question:

I have a flatbed towtruck and i have incandscent tailights. i want to put leds. i have 4 red stop-turn 5 1/4inch I installed the leds and now the turn signal blinks very fast and the brake lights worked for only a minute then stopped. do i need to put and a resistor for each light

asked by: Vince C

Expert Reply:

You will wire a load resistor into the wiring of each light socket that has an LED bulb and flashes. So basically you will need to wire a load resistor into any bulb that blinks or has a dual intensity feature that lights up when the brakes, blinkers, or emergency flashers are operated.

To do this correctly, you will need to wire the load resistor on the positive wire and then either ground it to the ground wire of the bulb, or to a good frame ground. You will need to do this for all of the LED bulbs that blink with the blinkers or flashers, and that illuminate brighter when the brake is applied.

For a load resistor I recommend you get an LED Light Bulb Load-Resistor # DI34ZR.

Check out the picture I attached to see how they wire in.

expert reply by: Jameson C