Lighted Door Switches

I have a 2006 Peterbilt 387. All of the dash switches have lights in them that go on with the clearance lights but the power window and door lock switches on the doors don't light up and someone told me that they should. I've checked them all and none of them have a place for a bulb in them like the dash switches do. If your 387 door switches do in fact light up, please let me know what year truck you have as I'm thinking that this change was probably made after 2006.