TAKE YOUR TIME!
If you are thinking in getting yourself this light set, please: take your time for the installation. My experience installing the lights was both, very challenging and fun! At first I was stressed and worried that I might be breaking a cable (it ended up happening twice =(), however a friend helped me out and well... Couldn't be more satisfied with the final result. It took me around 15 hours and tbh, once I broke the two cables, I started drilling some lego bricks with a rotary tool to make more space for the cables to pass through (which made the task way slower). Ended up working quite well for me and the time invested in it was totally worth it.
PROS:
1. Instructional video in their youtube channel was super useful.
2. The leds come with real lego pieces for you to make the replacement.
3. The quality of the wiring.
4. Comes with all the pieces you need to set the lights.
5. Price
CONS:
1. The printed instructions didn't help me... :(
2. The video from time to time changes the direction in which the cables go, so had to do some rework there.
3. The "disco" lights, specially the led above the bridge where the colors of the four houses are (the last bag considered it as optional, so can be easily removed)
4. The wires broke easily... (which is something I understand is a risk in all Lego-lighting sets, since cables need to be small to go through the bricks).
Overall, I was very pleased with the set. Would definitely buy another time whenever I get myself anither Lego set that is worth lighting out :D.