Hi there, my morette units have fallen into their housing breaking the bulbs. Which bulbs can i get from HALFORDS which will give me brighter light? is it an H4 bulb for the morette unit? (i've an MY02 WRX)

Help would be most appreciated

 

Certainly not a H4, they are the standard bulb with dip and main on the same bulb. They would be H1 or H2, check whether the bulb has a wire coming from it or not