Modded Peg Perego XUV550
It started last week when I built a custom 14.8v 16.8Ah 4S4P battery pack with 16x molicel p42a 21700 and a JBD BMS. The battery needed to roughly fit in the same area as the 12v lead acid, and the BMS was the exact width (depth wise), so I had to incorporate the front battery holder bar into my design. I'll post those pics near the end.
Now to yesterday - a full rewire (the drive motors now go through the fusebox), new light bar, a car horn (had to tape it up to reduce the sound, was quite loud), and some LED halo lights where the fake lights were in the front. I had to use a buck converter to bring the circuit down to 5v to power an ESP32-C3 for the halo lights, also built a small web app to control them by connecting to the wifi network that gets broadcasted by the device. I spent the entire day yesterday working on this.
I didn't take a picture of the fusebox after I installed the esp32 but I will include a mounting pic, under a thermal foam pad. I'll need to probably find a way to keep it held in place and shield some of the wires but it should be fine for now.
I included pics of the web app as well, it's got quite a few light patterns, probably more to come, but it remembers the settings too when you turn off the BMS and turn it back on.