No power to my headlights or wipers

The windshield wiper relay on a 2004 Ford F-550 is typically located in the fuse box under the hood. The fuse box is usually located near the front of the vehicle, on the driver's side. To find the windshield wiper relay, you will need to refer to your vehicle's owner's manual or a wiring diagram for the vehicle. The owner's manual should have a diagram of the fuse box that will show you the location of the windshield wiper relay. Alternatively, you can search online for a wiring diagram for your vehicle.

Once you have located the fuse box, you may need to remove a cover to access the fuses and relays. Look for a fuse or relay labeled "wiper" or "wiper relay" to find the windshield wiper relay. If you are having trouble finding the windshield wiper relay, you may want to consider consulting a mechanic or taking your vehicle to a dealership for assistance.

There are two relay's in the under hood fuse / relay box . Wiper relay an wiper relay 2 . Maybe one is bad . also check fuse #14 25 amp. Wiper fuse.Plus the BCM - body control module has a hand in making the wipers work . Are you familiar with automotive electronic control modules ?
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• Wiper micro relay
• Wiper 2 relay
• Wiper diode
• Windshield wiper motor
• Windshield washer pump
• Windshield washer nozzles
• Windshield washer solvent container
• Windshield wiper arm and blade assemblies
• Windshield wiper transmission
• WIP/WASH 10A fuse
• WIPER 25A fuse

Wiper/Washer System Description
The body control module (BCM) controls wiper motor low speed operation. The washer pump and high speed operation are controlled directly by the wiper/washer switch. The windshield wiper/washer switch supplies voltage on the signal circuits to the BCM for windshield wiper/washer operation. When WASH, MIST, DELAY, LOW, or HIGH is detected, the BCM energizes the wiper micro relay by suppling voltage to the relay coil. This allows battery voltage from the WIPER fuse to flow through the relay switched input then through the contacts and out the relay switched output to the wiper 2 relay switch contacts. Since the wiper 2 relay switch contacts are normally closed to the low speed circuit of the windshield wiper motor, the motor will operate at low speed.

Do you have any speed !

Did you check for voltage at the wiper fuse? My info says that fuse is hot all the time. Use a digital multimeter. Everything off, take a reading across battery posts, the generic spec for a full charge is around 12.6 volts. You should get close to same reading at the wiper fuse, hopefully. When checking voltage at the fuse, use chassis ground not the other leg of fuse. There are wiper relays, those are pcb relays, they are soldered into the fuse box, you can't pull them out. Your bcm is also involved with those relays. Your multifunction switch basically tells the bcm you turned on your wipers, then the bcm controls voltage or ground for the relays. You can see wire color for hi and lo speed voltage. Maybe a problem with fuse box or wiring circuit if voltage is low? I hope this was of some help?

WINDSHIELD WIPERS

It can be faulty wiper motor or blown wiper control fuse.

Do you hear any kind of noise when you starter the wiper function. If yes then fuse is ok, but issue is wiper motor.

If no movement at all and no noise then its blown fuse or shorted/loose wiper control wiring: -----

For complete troubleshooting i suggest you few helpful links with accurate solutions.

-------------

Click the link below: -------

1993 Ford F350 wipers not working?

http://repairhelpcenter.blogspot.in/2012/02/1993-ford-f350-wipers-not-working.html

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How to Replace a Windshield Wiper Motor

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-windshield-wiper-motor.html

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Wipers not working, but hear relay click on Lincoln LS?

http://schematicsdiagram.blogspot.com/2011/12/wipers-not-workingbut-hear-relay-click.html

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Car windshield wiper gets power for movement and stops?

http://schematicsdiagram.blogspot.com/2011/12/car-windshield-wiper-gets-power-for.html

----------

How does cars Windshield Wiper System Works

http://technoanswers.blogspot.com/2011/11/how-does-cars-windshield-wiper-system.html

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1997 Honda Protege: Replace Wiper Transmission?

http://technoanswers.blogspot.in/2012/06/1997-honda-protege-replace-wiper.html

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Windshield wiper fluid container leaking?

http://whatisbyme.blogspot.in/2012/05/windshield-wiper-fluid-container.html

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Where is wiper fuse located on1993 chevrolet suburban

http://technoanswers.blogspot.in/2012/02/where-is-wiper-fuse-located-on1993.html

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2002 Toyota Sienna: Wipers and Passenger side Power window stopped working?

http://technoanswers.blogspot.in/2012/04/2002-toyota-sienna-wipers-and-passenger.html

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Complete wiper components replacing details for Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/complete-wiper-components-replacing.html

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These details will help.

Thanks.

It can be faulty wiper motor or blown wiper control fuse.

Do you hear any kind of noise when you starter the wiper function. If yes then fuse is ok, but issue is wiper motor.

If no movement at all and no noise then its blown fuse or shorted/loose wiper control wiring:-----

For complete troubleshooting i suggest you few helpful links with accurate solutions.

-------------

Click the link below:-------

1993 Ford F350 wipers not working?

http://repairhelpcenter.blogspot.in/2012/02/1993-ford-f350-wipers-not-working.html

------------

How to Replace a Windshield Wiper Motor

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-windshield-wiper-motor.html

------------

Wipers not working, but hear relay click on Lincoln LS?

http://schematicsdiagram.blogspot.com/2011/12/wipers-not-workingbut-hear-relay-click.html

-----------

Car windshield wiper gets power for movement and stops?

http://schematicsdiagram.blogspot.com/2011/12/car-windshield-wiper-gets-power-for.html

----------

How does cars Windshield Wiper System Works

http://technoanswers.blogspot.com/2011/11/how-does-cars-windshield-wiper-system.html

---------

1997 Honda Protege: Replace Wiper Transmission?

http://technoanswers.blogspot.in/2012/06/1997-honda-protege-replace-wiper.html

----------------

Windshield wiper fluid container leaking?

http://whatisbyme.blogspot.in/2012/05/windshield-wiper-fluid-container.html

-----------------

Where is wiper fuse located on1993 chevrolet suburban

http://technoanswers.blogspot.in/2012/02/where-is-wiper-fuse-located-on1993.html

------------

2002 Toyota Sienna: Wipers and Passenger side Power window stopped working?

http://technoanswers.blogspot.in/2012/04/2002-toyota-sienna-wipers-and-passenger.html

-------------

Complete wiper components replacing details for Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/complete-wiper-components-replacing.html

------------

These details will help.

Thanks.

Have you noticed any water or other signs of a leaking windshield under the dash. It sounds like you have a GEM module problem, it bolts to the back of the fuse/relay box. If it is from water damage you will need to replace the fuse box aswell as the GEM (generic electronic module) don't forget to reseal the windshield.

hope this helps. if u have any other questions just let me know




Fuse locations for options not shown can be found in the corresponding wiring diagrams.
Amp.


1 - Headlight, Low Beam, Left (56b) 10
2 - Headlight, Low Beam, Right (56b) 10
3 - License Plate Lights (5 10
4 - Rear Window Wiper And Washer System 15
5 - Windshield Wiper/Washer 15
6 - Fresh Air Blower, A/C (X) 20
7 - Tail Lights, Right (58R) 10
8 - Tail Lights, Left (58L) 10
9 - Rear Window Defogger 20
10 - Fog Lights 15
11 - Headlight, High Beam, Left (56a) 10
12 - Headlight, High Beam, Right (56a) 10
13 - Horn (15) 10
14 - Back-Up Lights 10
15 - Engine Electronics (15) 10
16 - Power Sunroof, Front Map/Reading Light 15
17 - Emergency Flashers (15) 10
18 - Fuel Pump (FP), Heated Oxygen Sensor (HO2S)
Control Module 20
19 - Coolant Fan, A/C Relay (30) 30
20 - Brake Lights (30) 10
21 - Interior Lights, Clock, Luggage Compartment
Light (30) 15
22 - Cigarette Lighter, Radio, Luggage Compartment
Release 10

Separate Fuses

(Located above the relays)



- Fuse for ABS hydraulic pump relay 30
- Fuse for ABS main relay 30
- Fuse for A/C 30
- Fuse for power windows 20
- Fuse for cruise control 5
- Fuse for cigarette lighter 15

• Central junction box (CJB) Fuse 211 (15A), Fuse 215 (30A)
• Multifunction switch
• Wiper run/park relay
• Wiper high/low relay
• Windshield wiper motor
• Circuitry
• Battery junction box (BJB)
• CJB
• Generic electronic module (GEM)

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From your owners manual:

Fuse#11 30A , Wiper Run/Park
Relay, Wiper Hi/LO Relay, Windshield Wiper
Motor, Rear Washer Pump Relay

U will also need to check the relays if the fuse is ok, the relay, it is the underhood fuse box
Relay #202 — Front Wiper Run/Park Relay