rear brake lights with LED bulbs, turn signal problems

[kenner]

Just installed 4 new LED brake light bulbs, now when I use turn signals they flash super fast and dash screen says turn signal improper?

What goes with that, all brake light bulbs work fine.

Thanks
kenner

 

[Joseph Garcia]

The fast flash is called hyperflash, and you need to install resistors in those circuits, in order to slow down the flash. I left the hyperflash on mine, as I believe that the fast flash attracts more attention from other motorists, and after all, that is the purpose of the directional signals in the first place. I will note that hyperflash is illegal in some states. If you want to install resistors, they are most likely sold at the same place that you purchased the LEDS.

I do not get any dash screens saying turn signal improper on my '07, but perhaps your truck is never, and the warning systems are different.