Marker lights and tail lights not working

Tiny
RIC GORDON
  • MEMBER
  • 2008 FORD F-550
  • 6.4L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 50,000 MILES
No power to lights, don't know which fuse to check or what else to check.
Wednesday, April 24th, 2019 AT 7:10 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,336 POSTS
Welcome to 2CarPros.

The fuse is located in what is called the smart junction box (SJB). It is located on the passenger side foot well. I attached three pics. The first shows location, the second is a close up of fuse 22 which powers the parking lamp relay. The third picture is a legend of the fuses located in the box. The wiring schematic indicates the lighting relay to be in the SJB also, so if the fuse is good, check that.

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Here are some general links for testing and using specific tools you may or may not need. I'm just adding them in case you do need them.

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https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

__________________________

Let me know if this helps. If you need additional information, let me know.

Take care,
Joe
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Thursday, April 25th, 2019 AT 6:05 PM

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