I need to replace the relays for the power door locks on my '99 F250. I've looked in manuals, talked to mechanics, and even went to a dealership but no one can tell me where they are...does anyone know?? I'm close to driving this thing off in the lake!

 

are you talking about the actuator for each door? they are inside the door. right behing the latch. pull the door panel, there are 2- 8 mil bolts. behind the red lense and under the window controles. pull those. unplug window control wires. the door pannel lifts straight up. it's 2 or 3 t- 27 torx bolst that hold the latch to the door from the out side. dissconnect all rods inside the door. but remember how they go. and don't break or lose any of the plasctic clips.the actuator is attached to the latch. pop it off, new one on and repeat for the other doors.

 

No there's a relay for the locks, I need to find out where they are. They're not in the power distribution box under the hood, or in the fuse panel under the dash. I know it's in there somewhere...I have the wiring diagram, it just doesn't tell me where it is on the truck.

 

So I am curious if you found the relay?? I have an issue with power door locks that are not working properly. Usually, when you a moving at 13 mph, the doors will auto lock, and then when you stop they do not unlock. All this is normal and can be re-calibrated, but the only thing I did recently was reprogrammed new remotes.