Question about Cars & Trucks

1 Answer

Put a new multifunction switch on an it didn't solve the problem, still no power on either side of the headlight fuses

Power at the light switch,turn switch to manual put headlights on power to that side of swith going to multifunction switch, but no power on either side of the two headlight fuse location

Posted by on

  • 1 more comment 
  • david trevigne Dec 10, 2012

    the manual shows that a wire that is hot all the time feeds the light switch, from there when you turn the headlights on it sends the hot thru the dimmer switch which sends the hot to two fuses for low beams and then to the lights also from the dimmer to two relays for high beams i do not have drl so the headlights are on two n15 amp fuses an there is no power on either side of those fuses

  • david trevigne Dec 12, 2012

    the box under the hood is very small/ it contains two relays and a fuse, should i change these relay and see if it makes a difference?

  • david trevigne Dec 12, 2012

    the manual i have is a hayes book very little detail, is there a better manual that i can buy?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 21,873 Answers

The power goes thru the fuse, then thru the headlight switch, then the dimmer switch. If you don't have power at the fuse you may need a shop manual to get the wiring diagrams to trace the circuit back to the battery. Its supposed to be hot all the time.

Posted on Dec 10, 2012

  • 1 more comment 
  •  Stephen
    Stephen Dec 10, 2012

    Mine shows the actual headlight fuses being 10amp, but yes they are after the dimmer switch. I think the 10amp fuses are for low beam and the 15amp is for high but don't quote me on that. Either way, the main feel you spoke of is the 30amp fuse in the box in the engine compartment. If that circuit is dead you may need a schematic to track it back to the battery. If it is hot but nothing is coming out of the dimmer switch that may be your problem.

  •  Stephen
    Stephen Dec 10, 2012

    The main 30amp circuit feeds the dimmer for flash to pass and also the headlight switch.

  •  Stephen
    Stephen Dec 12, 2012

    The diagram I was using is on autozone's website. A regular shop manual from Ford would be the best which you could get from Ebay. There may be more than one box where the 30amp fuse is. Did you check the dimmer switch yet ?



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 1990 Answers

SOURCE: 2002 Highlander headlight keeps blowing fuse

In the Fuse Relay Box under the Hood there is a Headlight Relay. Replace this Relay along with a New Fuse and it should work. Let me Know. Please Rate my Response, I need all the Help That I can Get! Thanks!

Posted on Jan 28, 2009

  • 150 Answers

SOURCE: 1986 Honda Accord Passenger Headlight doesn't work

Check the earth wires have a good connection and are clean..

Posted on Feb 28, 2009

  • 383 Answers

SOURCE: 2001 subaru outback headlight not working

chapmnfarm: your head lights use a "2" fuse system.
one for the left and one for the right.
The fuse box you are looking for is under the hood on the passenger's side. It is a black box roughly 8 inches long and 4-5 inches wide. When you remove the cover, you will see fuses and relays. What you are looking for is the section in the box which has a cluster of 7 fuses. 3 in one row and 4 in the other. On the outer parameter are two relays. The fuses you are interested in are located in the row of 4 fuses, with the two closest to the "L" shaped part of the box. Both of those should be 15 amp fuses.
The fuse below those should be a 20 amp which is the lighting switch and the one below it is a 15 amp which is for the interior lights and the clock.
Check your harness grounds in the engine compartment near the area you have the problem. There are ground wires which come out of the harness on both sides of the core support. The wires are black in color and have "EYES" crimped onto the ends of the wires. Both of them will probably be located about 4-6 inches below the upper tie bar on each side of the radiator. Odds are that the eyes will be large enough to pass a 6mm bolt through.
I hope what I have given you will resolve your problem. Lem me know,,good luck>>>>>>>>>>>>>>>

Posted on Apr 19, 2009

  • 72 Answers

SOURCE: 2003 trailblazer headlights went out together.

bad dimmer switch

Posted on Aug 05, 2009

  • 680 Answers

SOURCE: 1979 cadillac eldorado biarritz headlights dont turn on anymore

You don't say if the parking lights and/or tail lights come on. If the rest of the lights are working. Try replacing the dimmer switch on the floor. It's relatively simple to do and cost about $15.00 depending on where you are

Posted on Feb 25, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Headlights not working

check drl unit if not found integrated in fusebox check connections at battery and all fuses if ok if no test light is available take each fuse out 1 at a time and check if not burnt then you have relays for headlights and parking try the 4 way hazards to see if the parking lights function then if all is good play with the multifunction switch to see if not burnt

Jan 27, 2014 | Jeep Cars & Trucks

2 Answers

1994 dodge dakota my headlights and tail lights and brake lights don't work my abs and parking brake lights are on my dash lights don't work either I replaced the headlight switch and still no

These are all different circuits. The brake lights are on a 10amp fuse - the headlights are on a 50amp fuse - and the parking and dash lights are on a 20amp fuse.
Do you have power going into the headlight switch and the brake light switch ?

Jan 29, 2013 | Cars & Trucks

1 Answer

1996 dodge Ram 1500 4x4 headlights dont work.All other lights work. Headlight lamps are all good. Could it be the switch or the multifunction switch? High beam works when I pull on the directional le

The headlight switch gets power for the headlights from a 50amp fuse.
The fuse powers the headlight switch then the dimmer switch breaks for high and low beams. So if the high beams work, the problem may be with the dimmer switch.
The dimmer switch is made into the turn signal switch on the column. You would need to check the low and high beam circuits at the switch for power.

Jan 14, 2013 | Dodge Pickup Cars & Trucks

1 Answer

Headlight relays

There are no relays as such. You need to check 10A fuse 11 in the junction box and 20A fuse 12 in the power distribution center. These are the source of power to the central timer module which controls headlight operation. If the fuses check good, start the engine and set the headlmp switch to HEAD. The headlights should come on with either low or high beam depending upon the position of the multifunction switch. If nothing happens, the central timer module probably is defective but the multifunction switch also could be defective.

Sep 23, 2012 | 2001 Dodge Durango

2 Answers

2003 GMC Envoy low beam head lights will not come on. The bulbs are not blown, fuse's ok, no power coming to the head light connector. minimal power to the fuse compartment with fuse removed. 9 to 10...

The problem is a Headlight module. Fuse box under the hood has two black modules side by side, the one on your right is the headlight module the one on the left is the fan module. Try swapping them, if the headlights work replace bad module, don't drive vehicle with the bad module in the fan slot. Mine kept going bad because I had a high intensity bulb on one side.

Oct 02, 2011 | 2003 GMC Envoy

1 Answer

Both brakes lights are not working although i have put new ones in,do not know where the fuse box is located.can you help

It's not necessaily the fuses. There is a switch on or near your brake pedal that likes to fail now and then. I would try that. You didn't mention if your tail lights work when the headlights are turned on.

Jul 20, 2011 | 2003 Renault 181

3 Answers

Ford expedition yr'00 headlight not working checked fuses..

The low beam headlamps have a seperate fuse for each lamp in the central or underdash fuse panel.
The right headlamp is fuse fuse 26 (10amp) and the left is fuse 28 (10 amp). These fuse are hot only when headlamps are on so you need to test them with a test light with headlamps on. If they do not have power to them then concern is either headlamp switch or daytime running lamp relay if your vehicle is equipped with this feature, or a bad multifunction switch.
Power leaves the headlamp switch on the RD/YE wire and goes to multifunction switch. It leaves multifunction switch on the other RD/YE wire The wire will then go thru either a connector c2003 located behind the passenger side air bag behind the dash or to the DRL relay if your vehicle has this feature and leaves there on RD/BK wire to the headlights .

Feb 24, 2009 | 2000 Ford Expedition

1 Answer

Electrical System Problems in '02 F250 Diesel

Does the truck have daytime driving lights ? Sounds like a short , maybe the switch inside the steering column . Turn signal , wiper , headlamp dimmer ,or multifuction switch . Without testing this is just a guess . Find a wiring diagram at there free , get yourself a DVOM - digital volt ohm meter an test the B+ volt into an out of the switch . moving dimmer from low to high an turning on the turn signals etc.... Suggest you watch a few videos on youtube for automotive electrical testing , how to use a wiring diagram etc.... disconnect circuits at the mutifunction switch .

Measure the resistance between multifunction switch C202a pin 44, circuit 44 (LB), harness side, and electronic flasher connector pin 1, circuit 44 (LB), harness side; and between multifunction switch C202a pin 44, circuit 44 (LB), harness side, and ground.
  • Is the resistance less than 5 ohms between the multifunction switch and the electronic flasher, and greater than 10,000 ohms between the multifunction switch and ground?

Carry out the multifunction switch component test; Refer to Wiring Diagrams Cell 149 for schematic and connector information.

  • Is the multifunction switch OK?
Yes INSTALL a new electronic flasher. TEST the system for normal operation.

No INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation.
Testing the electrical circuits of all the system not functioning properly is how you go about finding the problem .

  1. Visually inspect the following for obvious signs of mechanical and electrical damage.

    Visual Inspection Chart Mechanical Electrical
    • Headlamp switch
    • Multifunction switch
    • Battery junction box (BJB) fuse 3 (30A)
    • Central junction box (CJB) fuse:
      • 5 (15A)
      • 16 (20A)
      • 26 (10A)
      • 28 (10A)
    • Wiring harness
    • Loose or corroded connections
    • Headlamp relay (if equipped)
    • DRL relay No. 2 (if equipped)
    • DRL jumper (if equipped)
    • RAP module (if equipped)
    • Central security module (if equipped)
    • Light sensor amplifier (if equipped)
    • Headlamp bulb
  1. If the concern is not visually evident, determine the symptom and proceed to the Symptom Chart.

Symptom Chart
NOTE: Refer to the Wiring Diagrams for connector numbers stated in the pinpoint test.
Symptom Chart Condition Possible Sources Action
  • Both headlamps are inoperative
  • Battery junction box (BJB) fuse 3 (30A).
  • Headlamp switch.
  • Circuitry.
  • Multifunction switch.
  • GO to Pinpoint Test A .
  • The low beams are inoperative
  • Central junction box (CJB).
  • Circuitry.
  • GO to Pinpoint Test B .
  • The high beams are inoperative
  • CJB fuse 16 (20A).
  • Circuitry.
  • CJB.
  • Multifunction switch.
  • GO to Pinpoint Test C .
  • One low beam headlamp is inoperative
  • CJB fuses:
    • 28 (10A) (LH).
    • 26 (10A) (RH).
  • Headlamp bulb.
  • Circuitry.
  • GO to Pinpoint Test D .
  • One high beam headlamp is inoperative
  • Headlamp bulb.
  • Circuitry.
  • GO to Pinpoint Test E .
  • The headlamps are on continuously
  • Headlamp switch.
  • Circuitry.
  • Multifunction switch.
  • Daytime running lamp (DRL) relay No. 2 (if equipped).
  • DRL jumper (if equipped).
  • Headlamp relay (if equipped).
  • Remote anti-theft personality (RAP) module (if equipped).
  • Central security module (if equipped)
  • Light sensor amplifier (if equipped).
  • GO to Pinpoint Test F .
  • The high and low beam headlamp is inoperative on one side
  • Circuitry.
  • REPAIR circuit 57 (BK). TEST the system for normal operation.
  • The flash-to-pass feature is inoperative
  • Multifunction switch.
  • CHECK circuit 196 (DB/OG) for an open. REPAIR if necessary. If OK, INSTALL a new multifunction switch; REFER to Section 211-05 . TEST the system for normal operation.

Mar 07, 2017 | 2002 Ford F250 Super Duty SuperCab

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

80339 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

15190 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides