It looks like you bought a single beam kit. they do make a Hi?low kit for 9004 bulbs. A few options available. Xenon+Halogen, Xenon + Xenon, flexible (motorized housing). HID are really simple to hook up if you have the right kit. You need a power form a constant source on the car. If your kit didnt come with relay setup i would recommend running a relay. I can draw something for you to wire in a relay. If it came with relay and its a plug and play kit then you should have just one plug from the factory harness 9back of stock light bulb) and power and ground. Hardest part should be mounting the ballast and routing the wires clean. HID are worth it even if you have stock housings. i have stock housings (latemodel restoration) with xenon+xenon in mine. I sell and install HID so hit me up if you need any more help.