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I have checked my headlight, checked the wiring, and replaced the fuse, I've tested the wires coming out of the junction box and the only one that doesn't work is the one that goes up to the lights

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  • Cars & Trucks Master
  • 9,324 Answers

The headlight switch may not be working or the head light relay may not be applying power to that wire.

Posted on Apr 03, 2015

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

motor1258
  • 6674 Answers

SOURCE: Chevrolet Blazer 2000 Wiring Diagram

Have a look here.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528022b04d

Posted on Feb 20, 2009

  • 102 Answers

SOURCE: Purple solenoid wire shorted, no pwr coming from ign switch

look for a 5 amp fuse, crank fuse in car, not under hood

Posted on May 10, 2009

  • 617 Answers

SOURCE: tail lights are out yet license plate lights brake

you do have a tail lamp relay,

Posted on Feb 05, 2010

  • 1 Answer

SOURCE: I have a 2006 Chevy

I am having the exact same problem on my 03 Silverado. Replaced brake pedal switch, fuses, bulbs and the 4 way junction box as well. It is getting power to the box. How could the wiring harness randomly go bad to both sides?
Houston, let me know if you figure it out.

Posted on Feb 16, 2011

emissionwiz
  • 75108 Answers

SOURCE: i have a 2001 f350 superduty 7.3L with no headlights

Have you checked the main light switch, not the dimmer, look for a burnt connector to the main light switch, if found replace the light switch and the connector, the repair connector from the dealer must be soldered in and shrink tubed, no quick connectors. Here is a picture of the main light switch and the cost and part number.
MOTORCRAFT Part # SW5994 w/ Conventional Headlamps; w/o Fog Lamps
$99.79

7_12_2012_7_00_45_pm.jpg

Posted on Jul 12, 2012

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1 Answer

2001 ford f-250 super duty 5.4 headlight relay location


Sorry no relay , check the wiring diagram ! http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click on lighting , then under subsystem click on headlamps . Click the blue search button an two links will pop up . click on them one at a time > check the 30amp fuse # 10 in the under hood fuse block . Also check the 15amp fuse #16 in the central junction box ( inside fuse panel ) .Two more fuse's in the under hood fuse box #9 & #11 both 10amp . If the fuse are alright could be the headlamp main switch or the dimmer switch . Testing with a volt meter would be the most 1 appropriate way to test . Follow the wiring diagram from fuse to switches checking for B+ voltage into the switches an out of the switches . There are videos on youtube for basic automotive electrical testing .

Mar 07, 2017 | Ford F-250 Cars & Trucks

1 Answer

No low beam head lights on 1999buick regal


Do you know how to do basic automotive electrical testing ?

Headlamps Inoperative - Low Beams

Disconnect the headlamp switch.
Turn the headlamp dimmer switch to the LOW position.
Using a test light, frontprobe between the headlamp switch harness connector terminal D to ground.
Does the test light illuminate? YES - NO ?

2
Using a test light, probe between the headlamp switch harness connector terminal D to ground.
Does the test light illuminate?
--
YES - Go to Step 3
NO - Go to Step 4
3
Replace the headlamp switch. Refer to Headlamp Switch Replacement .
Has the repair been made?
--
Go to Headlight System Check
--
4
Repair a poor connection or an open in circuit 1750 between the headlamp switch and the harness connector terminal A and G201.
Has the repair been made?
--
Go to Headlight System Check
--
5
Reconnect the headlamp switch.
Using a test light, backprobe between connector C201 terminal A3 and ground.
Does the test light illuminate?
--
Go to Step 6
Go to Step 7
6
Repair a poor connection or an open in circuit 10 between the harness connector C201 terminal A3 and S221.
Has the repair been made?
--
Go to Headlight System Check
--
7
Using a test light, backprobe between connector C201 terminal A2 and ground.
Does the test light illuminate?
--
Go to Step 8
Go to Step 9
8
Replace the headlamp dimmer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .
Has the repair been made?
--
Go to Headlight System Check
--
9
Using a test light, backprobe between the underhood accessory wiring junction block harness connector C2 terminal F10 to ground.
Does the test light illuminate?
--
Go to Step 11
Go to Step 10
10
Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement .
Has the repair been made?
--
Go to Headlight System Check
--
11
Repair a poor connection or an open in circuit 1201 between the underhood accessory wiring junction block harness connector C2 terminal F10 and connector C201 terminal A2.
Has the repair been made?
--
Go to Headlight

Feb 18, 2017 | 1999 Buick Regal

1 Answer

I have no park lights or dash lights head lights work and turn signals work


1. Check the Violet/White (VT/WH) wire of the headlight switch for hot-at-all-times power from fuse #20 (15 amp) of the Battery Junction Box (BJB). Also check the switch itself for power feeding park lights coming out of the switch.

2. Check the #20 fuse holder for a missing, blown, or poorly connected fuse.

3. If the fuse is OK, inspect the wiring harness on the driver side front corner where the main loom wraps from the BJB to the inner fender for corroded or broken wires

May 31, 2015 | 1999 Ford Taurus

2 Answers

How to fix when headlight are on highbeam comes on also?


Replace the turn signal switch. All exterior lights run threw it, except the high mount brake light.

Mar 29, 2015 | Cars & Trucks

2 Answers

Why would battery power to my ignition switch come and go?


Bad connections at battery? Side post battery terminals are very prone to corrsion and poor connections. Other possibilities are weak/frayed fusible link, bad ignition switch.

Feb 27, 2015 | 1999 Pontiac Sunfire

1 Answer

Why does my truck keep blowing a fusible link


The Fuse Link That You Are Writing About Should Be Black, Going To A Red Wire. It Is On Junction Block, Not On Battery. It Feeds The Fuse Panel And The Ignition Switch. Junction Blocks Had Problems ie: Dirty and/or Loose Connections On Links.
Suggest you clean ENTIRE junction block and connections, and make sure all are SNUG--Don't Overtighten. If any won't tighten Junction Block has to be replaced. If further help needed, I have complete Wiring Diagram.

Jan 08, 2014 | Cars & Trucks

2 Answers

I have a 2003 Saturn L200. The passenger side headlights and parking lights will not come on. I checked the bulbs and they are fine. What could be the problem?


fuse possibly, check the fuse box, and the junction bow which is near the battery, in the fuse box/junction box look for the corrosponding fuse for the left side headlights parking lights

Aug 31, 2011 | Saturn L-Series Cars & Trucks

1 Answer

Have headlight issue with 2000 grand am gt. left head light is dim and orange park lights and markers work . headlights turn on automaticly as should. the day light running lights also do not come on. the...


Ground for the headlamps on your vehicle are after the turn/ headlamp / wiper switch . No grounds under the hood . ground G-201 is the ground point for the headlamps .

G201
On the left side of the IP, near the fuse block

you should look at a wiring diagram ! You can view one here at
http://www.bbbind.com/free_tsb.html

There is a left an a right headlamp fuse located in the under hood junction block (fusebox) B+ voltage from that fuse goese directly to the headlamps from the headlamps goes back to the junction block (internal ) from there to the headlamp switch , ground is through the switch to G- 201 . Find the problem with voltage drop testing . Watch this video . Between the left headlamp an ground you have a high resistance problem . Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

Mar 04, 2017 | 1999 Pontiac Grand Am GT

1 Answer

My lights wont come on when i turn the switch on!


I would check around the turn signals first. see if there is any current at the wires coming in to the light. (take 2 wires and a light bulb if you dont have a current meter)

and ofcoarse I would check the fuse box inside the car and under the hood to make sure there is nothing strange goin on.

Aug 14, 2009 | 1999 Mercury Cougar

2 Answers

Jeep Headlights not working. High beam works


had the same problem on my 92....check under the hood on the drivers side,towards the front,there is a "junction box" with all of the lighting wires connecting from the switches to the lights.My wires were all corroded inside,so I cleaned the ends and bought a new box from the local electronic supply store.The problem has not come back.

Cheers

Jul 08, 2009 | 1995 Jeep Cherokee

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