Tail lights and cluster lights not working

My tails lights don't work at all and some times my right rear turn signal doesn't work but the turn signal will randomly start working sometimes. The speedometer back light will work sometimes and then stop working as well as the ac lights. When I'm driving the door open light comes on and off repeatedly when my door isn't open. I've checked all the fuses and even purchased a new headlight switch but none of that has seemed to work. Any idea what could be wrong with it now?