The tail lights are completely plug and play. I took the tail lights out of my Jeep on Saturday morning in less than 15 minutes for both of them.
Basically, you open up the trunk, there are two plastic caps holding in each taillight. Pop up the cap and remove. I would place a cloth or rag on your bumper just to protect it as you pull the light out.
Then pull the tail light towards you (pull towards the back of the Jeep) straight out. There are two little ball clips that hold in the tail light and that is it.
Unclip all the bulbs and harness from the housing. Place your tail light to one side.
Now, remove the center two bulbs from the harness.
Unwrap the new LED tail light, and put it up to the cloth on the bumper. Now, the connectors on the LED tail light look just like the light bulbs. They simply clip into the bulb socket and that is it.
However, if you look at the bulb you removed, on the connection portion of it, you'll see 4 silver strips, 2 on each side. This is so you can put the light bulb in the socket any way round and it will work.
The connectors on the LED tail lights, have only 2 metal strips and this means you have to get the polarity correct.
The easiest way to check this is to have your lights on when you hook them up.
I had this issue that I put the lights in, turned on the light and I managed to get only one of the four bulb polarities correct!!!
Took me a moment to figure it out, but in the end, got all 4 polarities correct and voila! awesome looking tail lights!
There is also a resistor that you need to stick into the side of the tail light housing and fortunately there is a nice smooth metal plate when you remove the tail lights that you can stick this to.
As I mentioned, I have used these lights, as you can see from the pics, so you might want to buy some new 3M double sided sticky, that's all. I believe they will restick fine, but I don't want you to buy them and be mad at me that I didn't tell you about the sticky pad!
Hope this information helps you out.
There is also a 'DIY' on how to remove your tail lights on the forum, if you still aren't clear on my description.
The only thing to be concerned about is the 'polarity' issue of the bulb housings, and sticking the resistor to the Jeep when mounting the tail lights. Otherwise, they are a piece of cake to install!