BKzCLK430

ive been having weird thing happen to my 2001 CLK430..

1-i installed HID fogs since last yr but now the fuse keep blowing, i would put a new one in.. once i turn it on it blows! why??

2- my trunk light would be on but the trunk is closed..

3- somtimes my rear tail light would go on b itself flashing. either just one side or both

4- my dome lights dont go one after i tried to put LEDS in them but after i put the original bulbs back on, they wont turn on and yes i checked the fuses

please help me out, where should i go or what should i do....