Extremely bright. It's like putting on flood lights
I run these in all my vehicles that do not have Factory LEDs. They are absolutely worth the money. This set was for my 2003 Jeep reverse lights it came with aftermarket LEDs. When you put it in reverse it flashes 5 times then go solid and they are extremely bright I'd say at least three to five times brighter than stock. It also will help catch someone attention that is going to walk behind your vehicle or drive highly recommend them