Question about 2003 Ford Mustang

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Where is the head light ground wire on my 2003 mustang

I've replaced the bulbs fuses are good driver side headlight does not work on dim It works on bright

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Posted on Jan 02, 2017

  • 334 Answers

SOURCE: dim headlights

did you check your fuese under the hood al so check were your light plug in you may have a broken wire

Posted on Mar 29, 2009

  • 1170 Answers

SOURCE: 2000 mustang headlights are dim

Check the headlight relay.Little plastic cube about 1 1/2" square,usually black or dark brown and white ink numbers printed on top.Bottom has blades sticking down into the wire connectors.Location will either be under the dash or under the hood,not sure exactly about mustang There will likely be other relays in the same location,and many times you can match up two relays with the numbers printed on top,and swap the relay with say...the wipers' relay,just to see if it is a bad relay.Cheap ($0) and a check worth doing
I hope this will solve your issue.

Good Luck.

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Posted on Apr 01, 2009

  • 710 Answers

SOURCE: Right side head light dose not work on lowbeam, bulb was replaced and still doesn't work.


Posted on May 29, 2009

  • 1305 Answers

SOURCE: i have no headlights on 1988 mustang gt

Check headlight lamps... then follow the wiring from the bulb connections back and make sure you're getting a good solid ground connection. It may have a loose, broken, severed grounding wire.. it's usually attached to the car body at some location not far from the headlights.

Posted on Oct 14, 2009

  • 2 Answers

SOURCE: 89 Thunderbird, no tail lights

There are 3 wires behind the headlight switch brown+, brown-, and white. All 3 wires are normally clamped together.

I'm not sure what the white does, but when the two brown wires are connected, your parking lights work like they should.
If the brown wire leading from the bundle of cables grounds to the metal switch mount, it will blow your fuse.

If your parking lights don't work, and your rear lights don't come on with the low headlights, these 3 wires could have come undone.

Posted on Feb 24, 2010

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