have a 2010 screw wanting to know if anyone has installed led bulbs in their tail/brake lites and have had a problem with turn signals flashing fash

 

Led need less power then normal light.

You'll need a resistor to bring the blinking rate back to normal.

 

x-2 resistor to lower voltage they should have a kit i think for your problem.

 

i put some led tails in my truck and at first one side would flash fast then I messed with the wires made sure the one that was going fast was plugged in the same as the on that was working right and they both are going good now

 

This is a link to the flasher that will correct you hyperflashing. http://shop.advanceautoparts.com/web...GRPLAMPAMS____I know it works on 04-08 F150s but not sure about 09+. FWIW, it worked on my 08.

 

Unfortunately, that won't work - the 09++ trucks do not use flashers - it's handled by the SJB ( Smart Junction Box ).

Although , if it were so dang smart why TF doesn't it detect the presence of Leds and adjust the flash rate automagically


OP - As you might expect - this has been discussed before - and as y'all may also expect, SSCULLY was on the case, as usual

Everything you need to know is in here:

==>https://www.f150online.com/forums/el...er-relays.html

MGD