Hi my stereo, cigarette lighter, and windshield wipers randomly stop working

What is your question?

If my stereo cots off then my windshield wipers don't work as well. It's getting more frequent and sometimes for longer periods of time. I didn't know if there was a short somewhere? Is there a place where the stereo and windshield wipers could be linked somehow? More things might not work as well but those 3 are the only ones I notice so far.