I recently purchased LED replacement bulbs for my brake lights. put them in yesterday and now when i use my turn signal it blinks realy fast as if a bulb is out, checked it this monirng and no bulb is out. What could be causeing this?

 

i think there is some sort of relay you have to purchase. do i search. I think its less then 10 bucks also, did you do the front by chance? If so any pictures?

 

X2 on the relay. And if your cruise control no longer works the lights are the problem.

 

Thanks for the help, i think im just going to take them off and put the other bulbs back in there, maybe invest in some diff tails some time.

Anyone know why they do that?

 

LED bulbs use a very low current draw, as compared to a standard filiment bulb. The flasher looks for a current draw of a standard bulb. You have two choices to correct this:

1) Install a load resister in series for each bulb

2) Buy a new flasher that works with low current LED bulbs

I highly recommend the LED type flasher. If your local parts store doesn't have these, you can order one from www.superbrightleds.com. This way, the standard or LED bulbs will work normally with this flasher. Load resisters would cause a standard bulb to flash too slow.

As to the cruise control, the cruise circuit looks for a "load/no load" on the brake light circuit, based on the brakes applied (disables cruise) or not applied (cruise enabled). Since LED bulbs use low current, the cruise circuit is confused. Some aftermarket LED taillights have a built in load resister, allowing the cruise to work with their LED taillights.

If you used bulbs instaed of a complete taillight assembly, your cruise will not work without load resisters, which I'm against, as it requires you to cut and solder the load resisters into the factory wiring. Should you ever go back to regular bulbs, these load resisters have to be removed.

 

ill just take them off and put the old bulbs back on and look for a different tail light assembly. i know to look on Ebay but anyone know of any other place to look?

 

Tag for reading later...

 

Try a mechanical blinker relay instead of the factory one... should work then

 

O.K., here's the link:

https://www.superbrightleds.com/tail-brake-turn.html

scroll down to "LED ELECTRONIC FLASHER", select the one for Ford. Under 15 bucks. I installed it in my 2005; I have the multi yellow LED bulbs in the front headlight assemblies, with the standard bulbs in the rear taillight assemblies. Turn signals work "normally", and cruise works too.

 

Replace your T/signal relay with an EP27 relay from any parts store.