Hey, I did my entire led conversion for my center dash piece, but am having trouble with ONE of them. You know the 2 knobs, one for temp change(right) and the other for the level(left)? Well I got the bulb changed for the right knob, but the left knob is like a 3 or 5mm wedge bulb. Oh and I have an LX if that helps. But my question is, how would I go about changing this with an led bulb? Would I use 3 or 5mm? So do I hook up a resistor to is and just stick it in? Thanks.