LED Tail Lights Added to Flat Bed Truck Hyper Flash with Flashers/Turn Signals On

Question:

I RECENTLY PURCHASED LED LIGHTS FROM YOU FOLKS AND INSTALLED THEM ON AA FLATBED I BUILT FOR MY2003 DODGE 2500. I HAVE 2 RED LIGHTS AND I BACKUP LIGHT ON EACH SIDE. ALL LED. MY PROBLEM IS MY FLASHERS SOMETIMES WORK RIGHT AND SOMETIMES NOT. PLUS WHEN MY FLASHERS ARE ON AND I HIT MY BRAKES THE FLASHERS HYPERFLASH BUT THE BRAKE LIGHT IS STILL LIT SO IT IS HARD TO SEE THE BLINKER. PLEASE HELP

asked by: JERRY J

Expert Reply:

What you are describing can happen on vehicles when LED lights are installed but there is an easy fix. The problem is that the low power draw of LED lights can make the vehicle computer think that there is a bulb out because there isn't enough power draw. So it will hyper flash or not work properly in some situations.

The solution is to install load resistors, # DI34ZR, on any circuit that is affected. So the reverse lights will not have that problem because they draw constant power but the turn signals/flashers have intermittent power and you will need to install a load resistor on those wires. I have included a link to the installation details for the load resistors for you.

expert reply by: Michael H