Alla Lighting Upgraded Version 7440 7443 LED Strobe Brake Lights Bulbs, Pure Red Flashing W21W T20 Wedge 7440LL 7443LL 7443-SRCK, 7443-CK 7440ST W21W 12V Stop Lights 2835 SMD for Cars, Trucks

As advertised this product is considerably brighter than stock bulbs. There are a few minor things of note. * the dash warning on my 2020 Tahoe says there is a tail light malfunction when signaling. When signaling, the bulb flashes (strobes) twice as fast as the stock. However after 3 flashes, the error message comes on, and the speed of the flashes doubles. * when using the brake, it operates as advertised. (3 flashes then steady) *when using Hazzard lights It strobes twice per flash , compared to stock. Without any issues or dash warning.

Very bright and works really good 💯

Excellent product

Bulb is really bright but didn’t even last for two months and already defective/broken. Light bulb just continues strobe and no more solid light after.

The light itself is great. It’s bright and flashes as it’s supposed to. However the product has two flaws. First, it has a very loose fit and keeps falling out of the socket. I tried aluminum tape, but found that shrink tube works the best to keep it in place. The second problem is leakage current. Whenever I turn my headlights ON my cruise control stops working, which means there’s come current going back to the brake light. I don’t want to diagnose it anymore. Going back to the original bulb.