when i turn on my lights (dims) one of the bulbs works a1 and the other lights up very dim and yellow, sometimes both work perfect but mostly only one works with the other one dim, if i plug out the bright one then the dim one lights up and when i plug back in the bright one they both work sound then, any ideas what this is? no lose conections on the bulbs either.. when one is dim and one is bright (like they both should be) the blue full lights symbol in the dash very dimly lights up when the dims are on really annoying me now!