It’s an $11 Amazon tail light, here’s the link if you’re looking for it

Link

LivTee Universal 8" Flexible LED Light Strip with Tail Brake Stop Turn Signal Lights All-in-one for Motorcycle Scooter Quad Cruiser Off Road, Red/Amber https://www.amazon.com/dp/B07W8L4VGR/ref=cm_sw_r_cp_api_i_ZVR8HF5ZRYGSMYNH4PAW?_encoding=UTF8&psc=1