Put in a new battery. Engine starts and stops. Red circle blinking on dashboard. How can I stop the blinking.

My radio has no sound. Not sure if my auxiliary outlet has anything to do with it or a bad ground. Where do I check and how

My radio turns on but there is no sound from any speakers...when I start van I can hear a slight crackle coming from the rear passenger speaker

Need to find fuses to my tag lights and brake lights?

Both of my sliding doors won't open , I press the button to open them and it just beeps Anyone Know what's wrong ?