Which fuse supplies power to the outside rear view mirrors?

James,

Here's some sites that will help you...

https://www.google.com/search?q=driver+side+power+seat+on+2003+navigator+not+working

Best to you.

puddle fuse ???? Puddle light's on door rear view mirrors ? I can't find the center instrument fuse box ? Doesn't have one in the center . Has two - one right an one left
Fuse Block - Right I/P
On the lower right side of the I/P
Fuse Block -Left I/P
On the lower left side of the I/P
These are not what your looking for any way .

Exterior Courtesy Lamps
The SEO 1 15 A fuse in the engine wiring harness junction block supplies battery positive voltage to both the exterior courtesy lamp relay switch contacts and the exterior courtesy lamp relay coil circuit. When the driver or passenger door is opened the body control module (BCM) energizes the exterior courtesy lamp relay. Current flow is from the exterior courtesy lamp relay to both outside rear view mirror exterior courtesy lamps. The exterior courtesy lamps are grounded at G200 and G203. When the remote function actuation (RFA) module receives a door unlock command from the remote function actuator transmitter, the RFA module will send a message to the body control module (BCM) indicating that an UNLOCK command has been received. The BCM must have inputs that indicate that the ignition switch is OFF, all the doors are closed. The BCM will activate the exterior courtesy lamp relay illuminating the power outside mirror exterior courtesy lamps. If the door locks are activated to the LOCK position, or if the ignition switch is turned to either the ON or RUN position the exterior courtesy lamps will deactivate immediately.
When an outside door handle is lifted or a door is opened, the exterior courtesy lamps illuminate.
I would think maybe a relay problem , not a fuse . The exterior courtesy lamps relay , located in the relay block body . Relay Block -Body
Under the left side of the instrument panel near the left kick panel
If this doesn't fix the problem you need to have a qualified repair shop that has a factory or professional type scan tool view code's in the BCM - body control module .
DTC B2643
The SEO 1 15 A fuse in the engine wiring harness junction block supplies battery positive voltage to both the ground illumination relay switch contacts and the ground illumination relay battery positive voltage circuit. When the driver or passenger door is opened the body control module (BCM) energizes the ground illumination relay. Current flow is from the ground illumination relay to both outside rear view mirror ground illumination lamps. The ground illumination lamps are grounded through the courtesy lamps relay at G200 and G203.
DTC B2642

That is some vehicle coming with diming rear view mirror n also side view mirror. pls check your vehicle specification.

Could have a DDS an PDS .depends on what RPO code yours has >
Outside Mirror Description and Operation (with RPO DL3)
Or
Outside Mirror Description and Operation (without RPO DL3)
Without
Heated Outside Rearview Mirror Operation
The REAR DEFOG relay controls the operation of the heated outside rearview mirrors. When rear window defogging is requested, the REAR DEFOG relay is energized and B+ is applied to the supply voltage circuit of the mirror heater element, located in the mirror face. A constant ground is also applied to the mirror face. Current will pass through the mirror heater element, warming the mirror, so long as the rear window defogger is commanded ON.

With
Heated Outside Rearview Mirror
The DDS and PDS control the activation of the mirror heaters. Upon receiving a serial data message indicating a request for heated mirrors, the DDS and PDS, will apply voltage to the mirror heater element supply voltage circuit. The mirror heaters will remain active until a new message is received indicating rear defogger is to be deactivated.
The power mirror system consists of the following components:
• Driver Door Switch (DDS)--An electronic control module with integrated switches and requires programming when replaced
• Passenger Door Switch (PDS)--An electronic control module with integrated switches, requires programming when replaced
• Power Mirror Direction Switch--Integrated into DDS and is a four position momentary switch that provides a signal input to the DDS for up, down, left/extend and right/retract with a mirror switch activation
• Mirror Select Switch--Integrated into DDS and is a three position switch that allows the operator to select the left or right mirror and also a neutral/fold position
• Mirror Extend/Retract Switch--Integrated into DDS and is a two position switch that allows the operator to select the mirror extend or mirror retract position
• Left Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Right Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Body Control Module--An electronic control module that requires programming when replaced, serves as the power mode master and is the main message handler
• Horizontal and Vertical Position Sensors, if equipped with memory mirrors--Supplied a 5-volt and low reference by the DDS/PDS and provide a variable voltage signal to the DDS/PDS that is proportional to mirror position
• Folding Mirror Motor, in each of the outside mirrors, if equipped with power fold mirrors--Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly
Your best bet mite be to take to a qualified repair shop , i really don't think you'll be able to do anything with it.
Do you have wiring diagrams so you know which wires to test ,do you know how to do electrical testing ?
The Driver Door Switch (DDS) and Passenger Door Switch (PDS) supply voltage to the outside rearview mirror heater elements upon receipt of a serial data message from the HVAC module indicating that the rear defrost system is active. The door switch supplies B+ through the driver/passenger mirror heating element supply voltage circuit when a request is seen. Ground is applied through the driver/passenger mirror heating low reference circuit.

glass and motor availbable separately

Removal
NOTE: Do not remove the mirror assembly when repairing the individual mirror part. Individual mirror parts can be installed without removing the mirror assembly.

1. Remove the front door trim panel; refer to Section 501-05.

1. Remove the outside rear view mirror access water shield.

1. Remove the speaker.
   1. Remove the screws.
   1. Disconnect and remove the speaker.

1. Disconnect the outside rear view mirror electrical connector.

1. Remove the outside rear view mirror.
   1. Remove the nuts.
   1. Remove the outside rear view mirror.
      • Feed the outside rear view mirror wiring through the opening in the front door.

here's 1996, all I have. Please rate.

Mirror, Power — Outside Rear View NOTE: This procedure applies to both RH and LH power outside rear view mirrors.

Removal

1. Remove the front door trim panel (23942). Refer to Section 01-05 for the removal procedure.
   

1. Remove the two outside rear view mirror inside mounting hole cover screws and the outside rear view mirror mounting hole cover (17K709) from the front door (20124).
   
   
   
   
   

1. Remove the wire clip.
   

1. Disconnect the power outside rear view mirror electrical connector.
   
   
   
   
   

1. Remove the three power outside rear view mirror bolts and the power outside rear view mirror.
   
   
   
   
   

Installation
To install, reverse the removal procedure. Tighten the three power outside rear view mirror bolts to 3-4 Nm (27-35 lb-in). Glass, Outside Mirror
Removal and Installation
Refer to the glass replacement procedures in Manual Mirror for power outside rear view mirror glass (17K707) Trim Cover
Removal

1. Remove the front door trim panel. Refer to Section 01-05 for the removal procedure.
   

1. Remove the two outside rear view mirror inside mounting hole cover screws.
   
   
   Remove the outside rear view mirror mounting hole cover.

Installation
To install, reverse the removal procedure. Mirror Control
Removal

1. Use a small flat-blade screwdriver to pry the power outside rear view mirror control switch from the instrument panel (04320).
   
   
   

remove trim panel, remove mirror fasteners.

Glass, Outside Mirror—Town Car

Removal and Installation

1. Push upper edge of outside rear view mirror glass (17K707) into the outside rear view mirror to expose latch release.
   

1. Using a small flat-bladed screw driver or equivalent, move latch release to released position.
   

1. Remove outside rear view mirror glass mounting back and outside rear view mirror glass from outside rear view mirror.
   

1. Disconnect heater wire connectors and auto dimmer connector, if equipped.
   

1. To install reverse Removal procedure.
   

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Mirror, Power—Outside Rear View
Town Car

Removal and Installation

1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
   

1. Remove front door trim panel (23942). Refer to Section 01-05 .
   

Trim Panels, Door Front—Town Car
Removal

1. Snap out two door pull strap retaining screw covers. Remove screws.
   

1. Remove three screws on front and rear side and center of front door trim panel (23942).
   

1. NOTE: The following procedure must be used during removal and installation of the door armrest and trim panel. Refer to the appropriate illustrations for component and vehicle model identification.
   
   Using the Trim Pad Removing Tool from Rotunda Windshield and Moulding/Trim Removal Kit 107-R0401 or equivalent, pry the trim panel retaining clips from the door inner panel.
   

1. NOTE: Do not use front door trim panel to remove trim clips from door inner panel. Replace any bent, damaged or missing push pins.
   
   Remove window regulator control switch housing from front door trim panel. Lift up housing in front and disconnect all connectors.
   

1. Disconnect wiring harness and heated seat switch electrical connectors if equipped.
   

1. Remove the door trim panel.
   

1. Disconnect two electrical connectors.
   

1. Remove nut from outside rear view mirror mounting base.
   

1. Swing outside rear view mirror (17682) toward driver door window glass to expose screw in mount base.
   

1. Remove screw from outside rear view mirror base.
   

1. Remove outside rear view mirror from front door (20124). Guide wiring and connectors through hole in front door.
   

1. To install, reverse Removal procedure. Tighten nuts to 8-10 Nm (71-88 lb-
   

Mirror — Outside Rear View Removal
NOTE: Do not remove the exterior mirror assembly when repairing an individual part. Individual components can be installed without removing the exterior mirror.

1. Disconnect the battery ground cable (14301).

1. Remove the front door trim panel; refer to Section 501-05.

1. Remove the speaker.
   1. Remove the screws.
   1. Disconnect the electrical connector.
   1. Remove the speaker.

1. Remove the outside rear view mirror (17682).
   1. Disconnect the power mirror wiring clips.
   1. Remove the outside rear view mirror nuts.
   1. Remove the outside rear view mirror.
      • Feed the power mirror wiring through the opening in the front door (20124).

Installation

1. NOTE: When the battery (10655) is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 mi) or more to relearn the strategy.
   To install, reverse the removal procedure.

1. Remove the front door trim panel (23942) ; refer to Section 501-05 .
   • Peel back the watershield.

1. Remove the rear view mirror mounting hole cover (17K709).

1. Disconnect the power mirror electrical connector.

1. Remove the outside rear view mirror (17682).
   1. Remove the screws.
   1. Remove the outside rear view mirror.

please rate as fixya if this works for you.

There are two tiny motors in each mirror. one for up/down. One for side to side. They have jack screws (plastic) that fit into the motors.

You can manually put your hands on either side of the mirror and force adjust it. If you hear a ratcheting sound, the jack screws are OK. Then repeat with hands on top and bottom.

If you hear ratcheting and mirror stays where you stop it, that means one of the motors is bad. The motor assembly is available as a separate part.

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Mirror Motor—Crown Victoria, Grand Marquis
Removal and Installation

1. Disconnect battery ground cable. Refer to Section 14-01 .
   

1. Remove outside Rear View Mirror Glass as outlined.
   

1. Remove Outside Rear View Mirror as outlined.
   

1. Remove two screws from outside rear view mirror motor.
   

1. Remove outside rear view mirror housing from outside rear view mirror base.
   

1. Disconnect connector and remove outside rear view mirror motor from mirror housing.
   

1. To install, reverse Removal procedure.
   

Might be cheaper to buy used irror at car-part.com. Look for * to find page with cheapest part. Or, EBay. Good luck