When putting my car into reverse i realized the white back-up lights don't work!!! I'm positive they worked before. One very weird thing is that if I carefully turn my key back some the lights turn on. This is insanely weird, and my car has also been misfiring! I'm not sure if the 2 are related but any info would be greatly appreciated!

 

is it an auto or manual? the back up switch on your trainy could be bad?.
i hope you did check the bulbs right?