I have a 01 F250 Crew Cab 7.3 Diesel XLT.

The dome lights nor the cargo lights work. I have checked the bulbs and fuse. Does anyone know what causes this? I am thinking that I have a bad ground somewhere?

I read 0 potential between the two post on the dome light bulb(with the bulb removed). I also read 12 volts between either post and ground?

any help is appreciated!

 

Does your instrument panel light up with the lights on?

 

The "door ajar" light works fine. Is that what you are refering to?

Also, the instrument panel dimmer switch does not turn the dome light on.

 

I did a little digging and found this. Maybe it will help you.

https://www.ford-trucks.com/forums/1...omponents.html

 

Thanks. It did help alot. I searched and searched and couldn't find that.

anyway, I am fairly certain that i have a bad GEM module. But I can't find it. Where is the GEM??

I'll post on the other thread and see if he can tell me.

 

its under the passenger side dash, other then that i cant tell you exactly where it is under there. And Fords GEM suck!! All i do is read post all over Google with the 99-02 crew cabs having tons of problems with these junks