I realized about a month ago one side of my Ac Controls and Vent controls wasnt lighting up so i got on here ScionLife to firgure out what type of bulbs i need which i did so i ordered them and put them in yesterday and still that one side doesnt light up but the other side still did so i took the control unit back and swap the two new lights i just got into one anothers position and now neither of them light up so im kinda confused at this point and my fuses and bulbs are still in good working order

 

the leds (i assume) are +/- dependent, try just reversing the polarity