# Reading lights not working on 1999 F250 Super Duty

**URL:** <https://community.cartalk.com/t/reading-lights-not-working-on-1999-f250-super-duty/206586>\
**Category:** Maintenance/Repairs\
**Tags:** ford, f250\
**Created:** [November 10, 2026, 1:59pm UTC](https://community.cartalk.com/t/reading-lights-not-working-on-1999-f250-super-duty/206586 "2026-11-10T13:59:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cwatkin](https://avatars.discourse-cdn.com/v4/letter/c/59ef9b/32.png) [@cwatkin](https://community.cartalk.com/u/cwatkin)\
**Post date:** [November 10, 2026, 1:59pm UTC](https://community.cartalk.com/t/reading-lights-not-working-on-1999-f250-super-duty/206586/1 "2026-11-10T13:59:18Z")

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I am going through and replacing all lights with LEDs in my vehicles and have run into somewhat of a mystery with my 1999 F250 Super Duty. The dome light works just fine and always has but the reading lights didn’t work. I figured it was just bad bulbs. New bulbs didn’t solve it. I read that the switches in the overhead light assembly can get corroded and dirty over time so wondered if that was it. Someone offered to give me the light assembly from a junker they didn’t want. I went and looked at it and it was from a similar year F150. The light pod was IDENTICAL so I took it. Before removal, I hooked up a battery and tested to see if the dome lights and reading lights all worked. They did so I figured it was all good. I took it home and installed it but the reading still lights don’t work.

I figured they would all be powered off the same fuse but there was some confusion in the information I found while looking into this. It looks like some say these lights are controlled by fuse 4 and others say 14. I decided to pull fuse 4 and the dome light would no longer work. I then pulled fuse 14 and it was the same. Both these fuses were obviously good as both must be present and not burned out for the dome light to work.

I can see that the power and ground are all run through the three screws that attach the light assembly to the roof. All those are tight and I would assume that the dome light wouldn’t work if there was a connectivity issue here.

So, I took an identical part that was clearly working fine in the donor vehicle but the same issue is now going on once installed in my truck. The dome light works normally but the reading lights on the side don’t. What did I miss here?

This isn’t a huge priority for me but a minor annoyance. All other lights are working including the ones that really matter for safety and being legal on the road.