Originally Posted by imaz
I just picked up another bulb from a jeep dealer which was not a Sylvania - it too has a slight delay on stop light, compared to the originals.
Which ballast did you get and where did you hide the ballast? I have a 2012
Amazon, pretty much any 50watt 6ohm ballast resistor.
You need a pair, one for each side.
I also used a Curt trailer light harness to make the install 'plug n play' instead of cutting/splicing into the OEM wire harness.
With the Curt trailer harness, I cut it into 2 individual harnesses, and soldered the resistors onto the end and then plugged them into the OEM harness and dropped them down between the rear bumper cover and the body and then bolted them to a pinch weld just in front of the hitch.
The resistors get hot, so by bolting them to the pinch weld it allows the heat to radiate into the body metal.
Oh, and my Acme RedRocket LED bulbs are pretty much instantaneous when they light up... Hence the reason to go to LEDs instead of the regular/normal incandescent bulbs.