Re: Looking to upgrade the lights on my 2012
Unfortunately you are very limited by what you can do mainly because of the stock halogen reflectors. You could go throw in a plug and play HID kit, but the output is going to suck and they are going to blind everyone in front of your car as the halogen reflectors aren't designed to focus HID light. So thats not the right way to do it, but as I'm sure you see everyone does it.
Your best bet would probably be to find one of the highest quality replacement halogen bulbs and run that, and if you want to take it a step above, run them using a dedicated wire harness. That should make a noticeable improvement and would be easy and cheap to do.
The last thing I can mention, but this is really only for those that have the skill and knowledge to do it would be a total HID projector retrofit, but that requires a lot of time and skill and is not an easy task. This would also be the most expensive.
Oh and I thought of one more thing you could do. You could swap in a pair of HID headlights from one of the higher end models such as an Overland. I'm sure that has been done a number of times on the forums and the headlights should be getting pretty cheap by now on ebay. Not only will your light be significantly improved to HID projector, but it will upgrade the look of the front of your Jeep.
2015 Jeep Grand Cherokee High Altitude, Bright White, V6, HK audio