The turn signal relay (aka flasher) is located behind the instrument panel on the driver's side. It's directly above the emergency break on the inside portion of the panel, about six inches below the level of the headlight switch. You can reach it with your right hand if you sit on the door threshold with your back to the seat.
The flasher is covered by a black plastic box that's about 3" long and 1 1/2" wide. The cover is held on with plastic clips on the ends of the box. To remove it, squeeze the tops of the clips in pretty hard while gently pushing the cover up. (It tried squeezing the bottoms, pulling, etc. before figuring out that I had to squeeze harder.)
Once the cover is off, it's pretty easy to pull out the flasher and insert the new one.
Tip: A rapdily blinking turn signal may mean you have a signal bulb burnt out. Check your bulbs before replacing the flasher.
I believe this information is accurate for 1997-2006 Expeditions and, probably, F150s.
Despite spam entries to the contrary, this information is not available in your owner's manual, and you definitely DON'T need to contact a dealer. This is an easy do-it-yourself job.
where is the flasher relay located in 2004 grand am
The 2004 Chevrolet Express signal flasher relay switch can be found beneath the drivers side dashboard. The signal flasher relay switch will be near the brake pedal.
The turn signal flasher relay switch in your 2004 Chevrolet Express will be located beneath the drivers side dashboard. The signal flasher relay switch will be a few inches above the brake pedal.
The turn signal flasher on a 2004 Ford Expedition is located on the driver's side just above and to the left of where the brake pedal is. Look for a small square box that has a three prong plug-in.
part of fuse box
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location of flasher relay ford 150 2004
In the relay block with the other relays.
the injector is located inside the bore.
Follow the + battery cable it should connect to relay
there is a fuse #38 in fuse panel on right hand side under glove box 25 amp