For the last couple weeks my interior (dome & map lights) turn on randomly and won't turn off. I can't find any fuses that will disable them. With enough poking and prodding I can get one or two and eventually all three to shut off. They will still turn on randomly even when the truck is sitting without being driven or even having a door opened. The truck is sitting in 115 degree heat and it seems to be somewhat of a factor.

It's a 2001 Dodge Ram 3/4 ton. Thanks for any ideas!

 

Check door switches. I bet the drivers side is going bad.

 

+1... And if that doesn't fix it, remove and check the head light switch.