I changed the rear brake light bulbs to leds and the blinkers were fast. so then I changed the front turn signal bulbs and the blinking went back to normal. I turned on my headlamps manually and the signals worked fine with the stock relay flasher. my only problem is at night when the DRL's turn my headlamps on the signal lights do not work, and the signal light indicators in the cluster glows dim. would appreciate any help or info on to fixing this. all the led's i purchased from Superbrightleds.com on my 1998 blazer 4x4..

 

I'm in the same conundrum myself with my 04 right now...

 

Can you put the signal leds in backwards and see if the anomialy is reversed?

 

I did and it didn't do anything but just refuse to work... at all... running lights or turn signals