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Wiring diagram headlights

2000 Ford Taurus. Passenger side headlamp low beam will not come on. Lamp is good. Checked fuses, but seem to be good. Swap lamps, and the problem persists on the passenger side. Took out one fuse, and both lamps light - Driver side has both elements it dimly, and passenger side has one very dim. Replace fuse and driver side is normal and passenger side is out. Grounds seem to be ok. Could it be the headlight relay? If so, where is it?

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It sure sounds like a bad ground Doug.

Posted on Oct 20, 2013

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Posted on Jan 02, 2017

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SOURCE: replaced high and low beam headlights on passenger

Turned out to be a 15 amp fuse not making full contact. Thankyou anyway gentlemen.

Posted on Nov 18, 2009

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SOURCE: right headlamp

check fuse our ground

Posted on Aug 01, 2012

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1986 dodge w150(power ram) headlight stuck on high beams. Also having trouble with passenger headlight not working. Already replaced Hi/Low dimmer switch.


Have you checked the relay in the circuit. You really need a schematic of the wiring diagram. Electrical can be tricky without the wiring diagram.

Jul 22, 2017 | Dodge Cars & Trucks

2 Answers

2008 ford ranger headlight relay bad? Lamps do not light up, checked BULBS..OK no left highbeam Left and right lamp fuses ok and hi/lo 30a fuse ok


Did you check the fuse circuit for voltage, use a testlite or something.
I posted part of headlamp wiring. You understand your dimmer switch is involved in the circuits.
2008-ford-ranger-headlight-relay-tigo4fxke2krqgp04tlk3h2i-1-0.jpg

Oct 22, 2016 | 2008 Ford Ranger

1 Answer

Right low beam headlight does not come on but my right turn signal will stay even tho i diddnt turn it on. If I cut on my high beams the rurn signal cuts off. Whats wrong? Helo


It could be the lamp control module !
Headlamps
Battery positive voltage (B+) is applied at all times to the lamp control module (LCM) through the underhood fuse block HDLP fuse.
When you place the headlamp switch in the HEAD position, the headlamps input to the LCM is grounded. The LCM then applies battery positive voltage (B+) through the underhood fuse block HDLOBML fuse and HDLOBMR fuse, which feed the left low beam headlamp and the right low beam headlamp respectively. When you activate the headlamp dimmer switch by pulling on the multifunction lever until the switch clicks, the high beam input circuit to the LCM in grounded . The LCM then removes battery positive voltage (B+) from the low beam headlamps and supplies battery positive voltage (B+) through the underhood fuse block HDHIBML fuse and HDHIBMR fuse, which feed the left high beam headlamp and the right high beam headlamp respectively.
Check this fuse in the left under hood fuse box first. HDLOBMR Fuse 18 10 Amp. RH Low Beam Headlamp . If the fuse is good check for B+ voltage with the low beams on . Use a test light or volt meter . If you look on top of fuse there are two metal tabs ,check there for B+ voltage , If no B+ voltage the LCM - lamp control module isn't supplying any .
Lamp Control Module (LCM)
Under the left side of the IP, to the right of the steering column
Turn Signal Flasher
Under the left side of the IP, to the right of the steering column
Lighting Systems Component Views in Lighting Systems
Lighting Systems Connector End Views in Lighting Systems
Turn Signal/Hazard Switch
In the left front of the passenger compartment, in the steering column

Apr 28, 2016 | 2000 Buick Park Avenue

2 Answers

'02 Taurus SES Headlights and Hi Beams not working, Hi beams work w/ momentary lever pulled back


There is no relay for the headlamps on your Taurus . The lamps have constant B+ voltage , the fuses supply B+ right to the headlamps . The Voltage then travels to the dimmer an flash to pass switch on the steering column , then to the headlamp switch . When you turn on the headlamps the B+ voltage then goes to ground through the headlamp switch ! Pull the headlamp switch an test for B+ voltage on the red with yellow stripe wire . If you do your switch is bad . Go to www.bbbind.com/ for free wiring diagrams , then go to youtube an check out videos on headlamp not working trouble shooting ! From practical experience I'd say there is a problem with the headlamp switch , but don't guess test !

Jan 18, 2016 | 2002 Ford Taurus

3 Answers

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)

May 16, 2011 | 2003 Ford Escape

2 Answers

Audi A4 2002 Low beams & Right front turn signal stopped working


For Audi A4 the fuse box is located on the left side of dashboard behind a plastic cover (for left hand steering wheel vehicle). On inner face of the plastic cover you will find the fuse diagram.
First fuse on first row from left upper corner is Fuse Nr.20 = F20 (15A) - RH headlamp low beam, headlamp adjustment.
First fuse on second row from left upper corner is Fuse Nr.21 = F21 (15A) - LH headlamp low beam, headlamp adjustment.

Feb 15, 2010 | 2002 Audi A4

1 Answer

Passenger headlight don't work 2003 lincoln navagator


high beam or low beam? or both of them on one side.

  • One low beam headlamp is inoperative
  • Central junction box (CJB) fuse 23 (10A) (RH headlamp).
  • CJB fuse 25 (10A) (LH headlamp).
  • Circuitry.
  • CJB.
  • Go To Pinpoint Test C .


  • One high beam headlamp is inoperative
  • Circuitry.
  • Headlamp assembly.
  • Go To Pinpoint Test D .

  • The high and low beam headlamp is inoperative on one side
  • Circuitry.
  • REPAIR ground circuit 57 (BK).


  • Headlamp switch
  • Multifunction switch
  • Vehicle Security Module
  • Central junction box (CJB) fuse(s):
    • 17 (15A)
    • 23 (10A)
    • 25 (10A)
    • 35 (20A)
    • 40 (20A)
  • Circuitry
  • Headlamp bulbs
  • Daytime running lamp (DRL) relay



Apr 19, 2009 | 2003 Lincoln Navigator

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

Headlights


The fuse panel is located below and to the left of the steering wheel by
the brake pedal. Remove the panel cover to access the fuses.
fuse #11 is right head lamps
fuse #12 is high beams
fuse #18 is parking lights
good luck
paul

Oct 02, 2008 | 2005 Ford Taurus

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