I purchased a 1999 super duty and cannot figure why the interior dome light and central brake light do not work, I have checked bulbs and fuses but have found nothing. The map lights on each side of the dome operate but no dome. Anyone ever experienced a similar problem?
Frank

 

My dome light won't work unless I squeeze it. My center brake also isn't working, but it's just because I haven't replaced the bulb.

 

[updated:LAST EDITED ON 27-Oct-02 AT 00:45 AM (EST)]Do you have to physically squeeze the entire dome light? I haven't tried that yet. Come to think of it, I did check the bulb in the dome but not the brake. I'm gonna check it out tomorrow. Thanks grademan !

 

Yes, as strange as it sounds I have to physically squeeze the dome light assembly to get it to work. It's probably a real easy fix, I just never have messed with it yet. You see a lot of trucks with the third brake light not working. I've already replaced mine twice and I need another. (60k)

 

Howdy,
I had a similar yet different problem, but I think it may be helpful.
In my 99 350 sd the door ajar light kept intermittently sticking causing the dome light to stay on. I pulled a relay out of the fuse box and it took out the dome light and the center cab brake light. The map lights still worked. Eventually I took the drivers door apart and sprayed breakfree on the switches in the door, reinstalled the relay and life is good. Can't remember exactly which relay but as I remember there are only about two that I had in the box.

 

Hey, thanks for the reply Ed. I bought my truck used and I did have a problem with the door ajar switches hanging up. It's very possible the previous owner may have pulled the relay. I too sprayed the door switches which immediately cured the door ajar problem. Thanks for your input.
Frank

 

Glad to hear it helped. I know it was driving me crazy when I had the problem. Just goes to show you that if us ford truck guys, girls included, stick together we can conquer the WORLD! Next time I go out to the truck I'll see if I can figure out exactly which relay it was and get back to you. Let me know if you find it first. Later.

 

 

Frank,
It was sunny out this morning so I took the cover off and pulled the relay out of the box. It's relay number 1 and the part number is as follows: F578-148192-AA directly below that number is the following 8202A11F. It's the smallest relay in the box. It looks like relay slot 1 and 2 are the same size about 1" x 1/2", relay 2 isn't even present in my box. Then there are about 4 other bigger relays that run along the left side(vertically) under the 1 and 2 slots. When I was in there I pulled it and it did indead take out the interior light. I've got a 99 f350/sd/PSD but I would think the relay is the same. Good luck.

 

Hey Ed,
That's it ! Man thanks for the info my interior and barake lights are now working. I really appreciate your help !