ok i have a em2 that takes 9003 style headlight bulb, those are the ones with the double filments correct. So my question is that will a H4 bulb work if i just plug it in the socket? Im sure those are for the HID, arent they. I know they burn hotter than 9003, im guessing they have less resistance which makes have alot more amperage to the bulb, which will probaly blow my fuse, i know you cant put a high number fuse because the wire wont handle higher amps. so do you have to buy the whole pnp kit, are can you buy just the bulbs?

 

for starters, 9003 and h4 is the same bulb, so yes, it will fit. hid also burns cooler than halogen. you need the entire kit. the bulbs need ballasts to fire