Kuject Heat Shrink Solder Seal Wire Connectors Kit 120PCS, Waterproof Butt Connector Heat Shrink Electrical Terminals, Insulated Solderless Wiring Splice Connectors for Marine Automotive Boat Truck

So sad to see. I don't go to HVK but I live in Clinton Hill. Do you know who put the lights up? If you're interested in repairing it, I can meet you and give you some solder seal heat shrink butt connectors. Pretty easy to learn how to fix wiring with these. I just fixed my string lights that severed during the strong winds without too much fuss. This is what it looks like: https://www.amazon.com/dp/B073RMRCC3?th=1

But the new part, cut the wires and re-solder. They make the use nifty connectors you you hit with a heat gun that solder wires together. https://a.co/d/0iHlKDfp

If it doesn’t work you can always splice the wires back together one to one. They make butt splices that you can apply with a lighter. https://www.amazon.com/dp/B073RMRCC3