Reposting here - I put this in the 09' forum by accident...

I have a 2006 Ford F-150 V8 XLT 4x2 SuperCrew that I had to replace a few old/blown bulbs on (left Front Blinker and rear Right Blinker/Brake). I decided to go with the Pilot brand LED replacements, and verified that they are the correct replacement models to the factory bulb part numbers.

Per what I've read from others' experience doing this... I opted to buy the EP27 flasher to fix the issues with hyperflashing, rather than going with Load Resistors. So, all LEDs blink/flash with no problem.

The issue seems to be related to me having the Headlight Switch in the DRL-on position, and the headlights/parking lights not being on (i.e. if it's still daylight and it's just the DRL). If the Headlight switch is left in the off position or in the DRL-on position, when I brake or signal (left or right) the entire electrical system will flash/illuminate with the brake/flashing activity (this includes all LEDs and brake lights and the Stereo backlighting... anything that is dimmed by leaving the Headlight switch in an 'off' or DRL-on position). The only way to fix the problem is to turn the Headlight switch into the parking or headlights on position.. then the issue doesn't occur, all signal and brake light activities work as expected.

It's not a big deal, but I guess I'm lazy and like having the headlights come on and off automatically... plus, I'm a little worried that there might be an electrical issue that could cause me issues if I don't address it now.

The only thing I have NOT done is replaced the LEDs back with Incandescent bulbs, to see if the problem is totally eliminated. I have verified that no fuses are blown in the fuse panel, etc.

I'm sure the issue is easy to fix and I'm hoping the fix isn't to remove/replace the LED lights with OEM lights.. =)

Thanks again for any help you can give me. I really appreciate it.

--Brian

 

Do it. Then you will have your answer.

 

Albeit my question was to find out what others have done to make this work... since I'm clearly not the first owner of this model truck to swap with LED bulbs - as expected, swap with OEM bulbs and issue goes away.

So, back to my question - can you please help without telling me to go factory? You know that answer doesn't help.

Thanks