I am selling this because I changed to a larger one. I dropped it while driving once because I forgot to lock it to the carrier, so there are scratches and some cracks on the outside. There are no cracks inside the main body. If you know about wiring, I have modified it myself so that the stop lamp will light up when connected to the brake wiring. I have driven about 3 times (over 100 kilometers) in this condition, but it is a homemade product, so please understand that it is not perfect. Thank you.