i wondering how the switches work for these? i bought a used one and two bulbs arent working and i'm trying to figure out why. it's either the ballasts or the endcaps. either way cheap fix. heres how they are running now. thanks for looking in advice
front to back (back being the power cords and two switches.)
on second switch
on first switch
on first switch
off ???
off ???
on second switch
front to back (back being the power cords and two switches.)
on second switch
on first switch
on first switch
off ???
off ???
on second switch

