I wanted both LED cluster to turn on my new Depo LED Tail lights. I rewired the pin on the car so that the fog lights are wired in parallel. When I plugged in the lights I still only had one LED cluster that would light up. The fix was to add a 50W 1 ohm resistor in parallel with one of the tail lights. Now both LED cluster on both tail lights come on when I apply the brake. I hope this helps!
