1992 Pontiac Bonneville Interior Electrical Delay

I have cleared the codes 3 times and checked the fuses, which are all good. The radio does work when the ignition is on and the interior dome lights work when the switch is turned on, just not when the doors are opened. All of problems happened with ina week or so of each other.

My engine size is a 3.8L and is fuel injected and I do not have a remote entry system or at least not as long as the car has been in the family for over 10 years.

Mr. Weizel,
I have not made my self very clear. ALL the FUSES are good. I do not have a problem getting the dome lights to work, the instrument lights to work, the radio to work. They all work fine as far as the fuses go.
My problem are first when opening the car door the dome lights to not come on. I have not been able to find a door switch that activates the lights in the door frame or door its self. The lights work fine if I manually turn them on.
My second problem, which started the same time as my above problem is the radio, which is working. It used to stay on until the door was opened when the key was in the OFF position. It does not stay on now when the car or ignition switch is turn to the OFF position and the door remains closed after the ignition is turn off. It does work as long as the key is on and or the engine is running.
On top off all this the check engine light came on with the above problems. When is checked the diagnostic code it read 41. I have cleared the codes 3 time now and keep getting the same one. The fuses are fine once again as well.