So keep in mind i never changed anything to the audio system , everything is the same as when i bought the car. For some reason the radio works perfectly fine when the switch is on but the car is not on. Once i turn the car on the radio will work for like 5sec and then turn completly off and not work what so ever through out my drive. The only way to turn it back on is to actually turn the car off and the turn the ignition on but not turn the car on. I checked the audio fuse and its good. this problem started happening when i noticed my car battery wasnt working no more , so i bought a new battery and i thought it would do the trick but it didnt. Still had the same problem after. I check the back off the stereo to make sure everything was xonnected good and Cummins INLINE 5 was so im not sure what to check now?? Please help any information would help and greatly appreciated.thank you!