Flasher Where do I locate the signal light flasher inside of the Ford f150 to replace it.

How well does the turn signal flasher work?

Does it have tilt wheel? And have you checked all the bulbs and wiring to the lights?

You 2004 Ford F150 use OEM 3157 bulbs.
Inside these bulbs,there are TOTAL of TWO bulb filaments.
When one of the two burned out,it will cause turn signal problem.

Stock up with 4 bulbs before you start.
Auto part store sell then is pair.
I recommend you replace then in part and save the good on for emergency.
I attached a photo of the 3157 bulb below.
As you can see there are two filaments inside the bulb.
Check the bulb one by one and you will get the signal system working.
==== There are protective grease inside the base of the socket.
Make sure it's not blocking the four contact points (both side of the socket). ====

The other flasher fuel will be under the hood in the main fuse contol box.

You may need to replace the flasher,the turn signals use a different flasher but the same wireing so that would be the first place i would start.

have you replace the flasher,this sounds like a bad flasher,some have two flashers one for the turn signals and another for the hazards. hope this helps.

It is not the flasher if the hazards work, it is 1 flasher for both turn signals and the hazard lamps. It is in a relay block ( along with the blower motor relay ) under the dash, about in line with the steering wheel column ).

Try tilting the steering wheel all the way up, and test again.

The other quick test is to cycle the hazard switch a few times, to see if it cleans the contacts for the turn signal on the MFS,

I have a 2001 Ford F150, my brake lights dont work. Ive replaced the bulbs, checked the fuses,and the brake switch on side of the brake pedal was replaced. I still dont have any brake lights. My third brake light works fine, along with my running lights,flashers, blinkers.

try to find electronic flasher under dash,some disassembly required,turn on hazard lights,that flasher is close to the one you are looking for.

the multifunction switch (turn signal switch) is a major cuase of this. your high mount stop lamp wire is run through the switch.