Dont mean high jack your thread but I am thinking about buying the 520's. either the SMR or teh Ion Crystal. How do they perform? Would you buy them again or something cheaper?
Well I have chrome PIAA Plasma ION yellow 520i fogs. Just pull off the grill(which I do when I park somewhere dangerous), so you won't scratch them. I noticed some screws on the back side, unscrew them and remove the cover. Go about changing the bulb as you would do any other remembering not to actually touch the glass. It's an H3 bulb. Here, see if this link works... http://www.piaa.com/Lamps/Lamp-pages/520.html