Review on Antline 7443 7440 T20 992 7441 7444 W21W LED Bulbs White - Super Bright 1000 Lumens for Backup Reverse Lights, Tail Brake Lights, Turn Signal Lights (Pack of 4) by Michael Bressler

I used them to replace spare bulbs on Marauder 03 and Lincoln Town Car 08 98 When used in this way all emitters light up. I was a bit concerned that this isn't the case, don't worry. I say they are a good price because they are bright and seem to be durable LEDs 3156 and those ant lines knocked them out of the park in brightness. I only give these other cheap ones. Want to replace the LED, long life and low power consumption, equivalent in brightness to an incandescent lamp. If you need more light I think they will be bright enough for turn signals. If you use them on modern cars for turn signals you will probably need bus capable resistors depending on and from a specific car. More advanced folks can reprogram the car or rewire. Do your research first. Older cars will likely just need a new connector in the turn signal electronics.blocks. jay