Straightforward to install, very effective lighting!
I bought the remote lighting set for the 42127 Technic Batmobile. This was added after full assembly of the Lego set. While the instructions were relatively clear, some of the lights were a bit fiddly to install, but blunt nose tweezers and an optivisor made the job pretty easy. No major disassembly was required, and the wiring was will hidden inside and beneath the structure. Be aware, if you fit the lighting in the rotating rear jet nozzle, you will need to disconnect the rotational gear and it will no longer work as intended.
Highly recommend this set, the remote option adds different lighting effects and combinations which are really effective. Lifts the whole appearances of this somewhat skeletal Technic model to a completely new level.