I have been getting the rear light problem on my dash for a while. This weekend I had my lights turned on at night and I noticed that the driver side inner tail light bulb was out. I replaced this bulb but when I started driving again the dash error appeared again. I had my dad look at my rear lights at night when the lights were turned on and I braked and put the car in park. My dad said everything looked alright. I continued to get the error so today during the day while the lights were turned off I hit the brake and noticed that when I brake my passenger side tail light does not light up. It only lights up when I turn on the lights. So I decompressed the brake and turned on my lights. This time I noticed that one of the bulbs in my outer tail light was out. However, when I shut the trunk the light came back on?

What do you guys think? Some kind of bizarre electrical issue?