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Right high beam bulb has no voltage. Left side works fine. No voltage at fuse #2. Is this an issue in the fuse box? I see voltage on fuse #5 for the left side...

This is on a 2003 trailblazer.

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  • PMH Dec 15, 2016

    This is a 2003 trailblazer.

  • Jeff Armer Dec 15, 2016

    Looking at a wiring diagram both fuse's #2 & #5 get power from same place HDLP relay #43 .Fuse # 2 is spliced inside the fuse box ! So yes , i would say this is internal problem in the fuse box .

  • PMH Dec 15, 2016

    Thanks! Think I could wire around the fuse box for this one failed circuit?

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  • Cars & Trucks Master
  • 11,467 Answers

You could Put a piece of wire from the good fuse to the other !

Posted on Dec 15, 2016

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  • PMH Dec 16, 2016

    Thanks again for the direction.

  • Jeff Armer Dec 16, 2016

    Your welcome ! You could also get a used fuse box from a salvage yard $10 bucks .

  • PMH Dec 17, 2016

    Jeff, FYI. Jumper works fine... Thanks for confirming my suspicion!

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2010 impala high beams do not come on, light on dash comes on, replaced bulbs still don't work, checked all fuses, look good


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Battery voltage is applied at all times to the coil and switch sides of the HIGH BEAM PCB Relay located in the underhood fuse block. When the headlamp dimmer switch is placed in the high beam position, the headlamp dimmer switch signal circuit to the BCM is pulled low signaling the headlamp high beam request. In response to this signal, the BCM applies ground through the high beam relay control circuit energizing the high beam relay. With the high beam relay energized, battery voltage is applied through the switch side of the relay, the left and right high beam fuses, and the high beam supply voltage circuits illuminating the high beam headlamps. At the same time the BCM sends a GMLAN serial data message to the instrument panel cluster (IPC) requesting the IPC to illuminate the high beam indicator. Ground for the left headlamp is provided at G101 and the right headlamp at G100.

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You could possibly have a problem inside the the under hood fuse box . ( Corrosion ) Looking at a wiring diagram both right an left high beams ground side splice together inside the fuse box . This ground or (circuit ) Comes out of the fuse box at connector 2 pin E6 Dark blue with a white trace wire. Do you know how to do voltage drop testing ? I will give you a training video on youtube on how to do it . Look at the diagram the left headlamp assembly pin G goes to the underhood fuse box on a pink wire going into the fuse box at connector 2 pin B7 . With a volt meter test for B+ voltage there and at the headlamp assembly pin G .. Watch this video it will show you how to test .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

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I have a 2006 civic SI. DRL indicator is on, driver side low and high beam ok. Passenger side low beam ok but DRL and hi beam not working. Any help is appreciated.


When either the high or low beam light is out in either side, DRL (daytime running lights) indicator will come on. When one bulb goes out, that's a clue the opposite bulb will burn out soon, so its best to replace both bulbs. If it was a fuse issue, both left and right side would be out. If driver side is OK but passenger side is not, then its a bulb issue. A 2006 Honda civic takes 9006 (HB4) low beam bulbs and 9005 (HB3) high beam bulbs. Cheapest is online from Walmart site-2-store. After procuring, wear latex, vinyl, or ANY gloves to keep your (corrosive) oil skin from coming in contact with headlight glass bulbs. Your skin oil will chemically react and cause shorter life span on glass bulbs. Instruction don't tell you this, so you handle with your hands, then need to replace bulbs 3 years later instead of 5 years (or more) in the future. With gloves on, pop the hood and look behind each headlight. Turn counter clockwise to unlock headlight bulb holders. Its a quarter to half turn to unlock bulb holder lock. Replace one bulb at a time so you don't confuse high beam from low beam. The wire has a tab you need to lift to pull out & disconnect wire connector. You might need a slim narrow-**** (NOT phillips) screwdriver to lift the tab; or use your house key. Snap the wire connector to the new bulb, then twist into headlight housing to secure bulb holders, then move on to the next bulb to repeat the procedure. Pict below, 9005 high beam is on the left, 9006 low beam is on the right. Handle by grasping the plastic base, not the glass bulbs. The raised potrusion on the bottom center is where the tab locks onto wire connector. Replace all 4 bulbs now, but in the future, its likely the low beam will wear out before the high beam. In the future, replace only the pair, not all 4. The factory installs inferior bulbs that go out sooner, hoping you'll take to dealership and they ******** you with higher parts-n-labor fees. As opposed to Walmart online site-2-store, it would cost you AT LEAST triple in parts & labor from dealership to replace all 4 headlight bulbs :-(
45d1f6ac-2983-42b9-a46c-30ef441b89e7.jpg

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Dodge ram 3500 turn signal - headlight problem


WAY TO GO !!! another "great idea" from vehicle manufactures

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I have a 2006 ford escape and the passenger head light low beam will not work. Tried replacing the bulb, and check fuses nothing is working.. what else can I try?


Both your low beam and your high beam is protected by the same fuse, so it makes sense that the fuse is OK if the high beam is working on the passenger side. There are 3 fuses for the headlamps. Fuse #13 in the Battery Junction Box (20 Amp). If this fuse is blown, the headlamp relay will not have any power and neither high nor low beam on either side will work (you will have no headlamps at all) Then there is Fuses #2 and #3 (15 Amp) in the Battery Junction Box. #2 goes to the left low and high beam and #3 goes to the right low and high beam.
The headlamp switch uses a SINGLE CIRCUIT to control BOTH sides at the same time, so if one side works, the switch cannot be the problem. The headlamp relay provides power for fuses #2 and #3 and we already ascertained that these fuses must have power since we have working lights on both sides, so the relay cannot be the problem. A replacement bulb has already been tried, so that pretty much leaves us with a bad lamp socket. (Most likely cause) or a bad connection at splice #S122, which is located in the main wiring harness near the breakout for the left headlamp. (RED/BLACK wire)

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1 Answer

Left high beam does not work. Fuse and bulb are fine.


Hello and welcome to FixYa!

Please try this. Transfer the right side high beam bulb to the left. After that, turn on the high beam and observe if the left side will respond. If it does respond then the problem will be on the bulb itself.

If the problem still persists then the problem can be just on the bulb connector. If the bulb connector is worn out, the bulb tends to operate.

I strongly suggest that you replace the bulb and bulb sockets if found out faulty to resolve the issue.

Hope this helps and thank you for using FixYa! Have a good one!

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First fuse on second row from left upper corner is Fuse Nr.21 = F21 (15A) - LH headlamp low beam, headlamp adjustment.

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1 Answer

1997 Hyundai Accent is acting funny in the headlight department. At first my day-time running lights didn't work and low, high, and flashers were fine. Now, day-time running lights work, high beams work,...


There's only one relay, but two fuses, both located in the underhood fuse/relay box.

53ee18a.jpg Sounds like you have a wiring problem since sometime the left works and the right doesn't, then the right works then the left doesn't. Might be the multi-function switch on the steering column in combination with the connector M10-1, EM01, SE14 & 16.

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3 Answers

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>>>>>>>>>>>>>>>

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1 Answer

My headlights dont work,.all other lights are fine though,.is it the fuses or the bulbs? im not sure what fuses they would be,.there seem to be different ones for the same thing


do your flash to pass lamps light when you pull the stalk towards you? If yes, the bulbs are ok.
Do the hig beams work?
Your headlamps have sepaerate fuses for each headlamp and you have a low beam relay and a high beam relay under the hood in the black box.
If everything is out, I suspect a bad headlamp switch.
Check car-part.com and look on page with * for cheapest price.

Your owner manual will identify fuses & relays.

PS, You did not recently instal high current bulbs did you? If yes, put originals back in.

HEADLAMPS

The voltage is supplied to the lamp switch through a fuse. This fuse is located in the central junction box in the left-hand footwell.
When the headlamps are switched on, a voltage is supplied to the high beam/low beam switch and to the low beam relay. The relay for the low beam is located in the battery junction box (BJB) in the engine compartment.
If the high beam/low beam switch is set to "low beam", then a voltage is supplied through the low beam relay to the low beam part of the headlamp assembly. The left and right-hand low beams are fused separately. The fuses are located in the battery junction box (BJB) in the engine compartment.
If the high beam/low beam switch is set to "high beam", then a voltage is supplied through the high beam relay to the high beam part of the headlamp assembly. The left and right-hand high beams are fused separately. The fuses are located in the battery junction box (BJB) in the engine compartment.

----------------------------------------------------------------------------------------------------------
Lamp Switch
Removal
  1. s2y~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
    Remove the lower driver's side footwell trim.
  1. Detach the lamp switch bezel.
    • Remove two screws.
  1. Remove the light switch.
    • Remove three screws.
    • Disconnect the electrical connector

Feb 23, 2009 | 2005 Ford Focus

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