Hi
A few months ago my cab light turned on and stayed on no matter what i did with the switch. I pulled the fuse as a quick fix. My 1st thought was that i could be the door switch went bad, but when i have my keys in the igntion and i open the door it still beeps like before. so im out of ideas and tired of using a flashlight. btw the pervous owner has done some real nasty wireing that i have ended up fixing a few times.
thanks, CH

 

Have you checked the dimmer switch and is the door ajar lamp on in the cluster?