Taillights and license plate lights do not work

Tiny
LIEBEDEUTSCH
  • MEMBER
  • 2007 FORD EXPEDITION
  • V8
  • 4WD
  • AUTOMATIC
  • 185,000 MILES
The brake lights, blinkers, and headlights all work. I have checked all appropriate fuses and none seem to be blown. My trailer lights are also all functioning (including taillights). Does anyone know of anything that could cause this and how/where to check this myself?
Wednesday, April 3rd, 2019 AT 9:44 PM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

It looks to me you could possibly have a problem with these circuit's ground. Ground 401 under the left quarter window. Take a look at this ground and make sure that it is clean, corrosion free, tight, and making good metal to metal contact. I have included the wiring diagrams for your vehicle's exterior lighting in the diagrams down below. I have highlighted the ground on the last diagram. Get back to us with what you find out.

Thanks,
Alex
2CarPros
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Thursday, April 4th, 2019 AT 8:01 PM

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