Taillights and license plate lights do not work

2007 FORD EXPEDITION
185,000 MILES • V8 • 4WD • AUTOMATIC
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LIEBEDEUTSCH
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  • 1 POST
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?
Apr 3, 2019 at 9:44 PM
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SCGRANTURISMO
  • CERTIFIED EXPERT
  • 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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Apr 4, 2019 at 8:01 PM