I did it on my XLE: it’s not plug and play, the light assemblies fit exactly physically the same as the existing ones but you have to do some additional wiring to power the LED bars on the light assemblies on the hatch. I tied into the trailer hitch plug that’s located under the s-are tire area. Popping off the interior trim near the hatch is easy. Fishing the wires through to the hatch takes time. You do have to remove the trim on the hatch itself. If you’ve installed a car stereo with new wiring you should be able to do it, otherwise get help from someone with that type of experience…My parents have a XLE and really want the premium taillights with the 3 bars after seeing our family’s Limited. So I just have to order these 4 part #s? No other parts, wires,etc? Is it all plug and play on a XLE? What is the difficulty level on a scale of 1-10? (I understand this is highly subjective)