help identify hid bulb!
 

hi guys, recently one of my headlights went out and i found out that the truck i bought was set up with hid lights. the guys at autozone werent very helpful and they told me i had to find out what size and stuff my hid bulbs where, and i have no idea where to begin. the bulbs dont have any numbers or markings on the wires and stuff, so if someone can help me identify (whether its h1, h2, h3, or any other valuable information to buy them) that'd be great.

Attachment 1766

forgot to mention, the truck this willb e fitted unto is an 05 ford ranger king cab