2004 xc90 the radio & fuel gauge cut out together

Hello, I was looking for a common circuit but cannot seem to find anything isolated to audio operation and fuel gauge operation. It is still possible -- so check all possible fuses to ensure none are blown. If you find one is, that circuit will need to have troubleshooting performed to find out why this happened. Separately, the audio unit may require troubleshooting to find out why it is not working, and it appears there are some possible fuel pump and sending unit issues associated with this vehicle historically that can be affecting gauge operation. Testing is truly required hands on.