Multiple electrical issues

My car radio shuts off momentarily whenever I hit the brakes. Sometimes my navigation system also flips on and then off and sometimes my battery light pops up on the car's dashboard momentarily as well. I thought it was the alternator, so I got it replaced Wednesday, but the problem came back this morning. The problem doesn’t occur at all at night and very seldom in the morning, it’s mostly during the day when it happens. I also was at the drive thru of two different restaurants this morning and one day last week with my foot on the brake when the car acted as if it was going to shut off but jumped right back on. I also have an overcharged air compressor which I have an appointment to fix next week but I never use the air while driving because it becomes hotter, can you help me?