Review on 🔆 AUXITO 912 921 T15 LED Bulbs: Error-Free, 2000 Lumens Brightness, 9-SMD CSP, Plug and Play - Ideal for Backup Reverse Lights, 6500K White (Pack of 2) by Justin Guldin

They're great - just installed them in my 3rd gen Toyota Tacoma and they're bright as hell. Fitting into the standard Tacoma taillight housing is very tight - I make mine no worries about water ingress. I used one of the included red o-rings but didn't spend much time contemplating between zero, one, or two o-rings apiece. I just don't think it will be a problem. The blade connector fits where a regular lightbulb goes, and for that reason I took some 1.5 inch shrink wrap with glue and a good heat gun. I placed shrink wrap around the original housing and spade connector. I hope I don't have to cut it off for many more years. I'm impressed with the quality of the aluminum heatsink - it actually looks better than many of the photos here. It's designed, I believe it's functional and extends the life of the LEDs. Looks like a great product!