Malfunctioning radio and power steering

My radio only works while the car is in park. Also, my wheel does not turn well in reverse, but it does this sporadically. Now I don’t know if these two problems are related but they started occurring around the same time.

The problem might be with the PRNDL (prindle) switch. This switch tells the computer what gear the vehicle is in. There are reports that when this switch malfunctions it can cause problems with things such as the dash lights/radio. Also, when the transmission is put into reverse this switch tells the computer that. This then allows the computer to bump the idle speed up slightly to provide more power steering assist while backing up slowly and turning. If that doesn’t happen the steering wheel will be harder to turn.