Replaced both headlights on Ford Flex. Excellent turnaround after ordering and excellent fit and finish on products.
Appreciate the sense of caring and follow through.

Had some issue installing but once done these bulbs are fantastic, very bright, the main question for me is to see how long they last, time will tell. Installed on A 2021 F150

it wasnt the bilb si bought it was the talk with the person behind the counter. The person behind the counter assured the items would work and guided me on how to set everything up
kudo to them and i will use Underground again

It’s not too blue or too white … it sits right in the middle and that’s why I ready like it. The brightness is okay. Maybe 20% brighter than the OEM. I don’t like the yellow color on the OEM so I had to change it to this.

This is exactly what I was looking for, a high quality bulb that I could just plug and work without any other wires or resistors. The brightnes is 10x better than stock.

High quality design and materials… totally plug and play with no need for an external resistor. Very bright and really cleans up the look of the front end lighting! Very excited to see some options for the wt-21 rear lamps!

Installed these in a 2017 Jeep Patriot. There were some difficulties involved with installation since every car is a little different. I contacted customer service and received a prompt reply via email and he offered suggestions to ensure the proper fit. They are very bright and pure white, unlike the yellow OEM bulbs. Very happy with this purchase.

Installed these in a 2017 Jeep Patriot. No hyper flash and super bright! I installed the tail lights first to see how they would work before installing these since you have to remove the front grill and facia to get at them. Very satisfied with this purchase.

Installed in a 2017 Jeep Patriot. No hyper flash and way brighter than standard OEM bulbs. If you have your foot on the brake and your car is quiet, you can hear the tiny fans running. Very satisfied with this purchase.

Awesome lights very bright and work as they said no hyper flash!

LED from underground has made the difference with my truck lights, and I haven't had any problems with the truck hipper flashing.

These lights are so bright! Also really nice crisp light output that’s true white and not the yellow that jeep passes off to be white. Easy install without removing the bumper. Done on my 2014 Grand Cherokee

There's a little fan noise but they work perfect on my 2017 Grand Cherokee Altitude. Super easy install. These and the front signal switchbacks are just great. Since it took me a while to find what was correct for my Jeep I'll probably end up upgrading the rest of the lights I've done. Anyone need a bunch of crappy LED lights for a Jeep? LOL

I wish I'd seen these videos before I decided to be Mr Fixit. 2 minutes to install in my 2017 Grand Cherokee Altitude. Turned the signals on and about had a stroke because they hyper-flashed. Turned them off, started the engine and let it run for a minute. Turned the signals back on, the fault cleared and they work perfect. Love these switchbacks

Great leds, just fit right in, shipped perfect timing