The bulbs are just that… Bulbs. They have the XENON/HID wannabe’s which just changes the color of the headlights and makes the output suck… The HID KIT is a simple plug and play. And yes you use your same harness it just go’s to the ballast which has another set of plugs that go the HID bulb. Or something like that… I cant remember for sure.
I’m not sure his question was answered. I to have a similar question. I have purchased jdm headlights and an HID kit. My question is: What type of bulbs should i use and where can i find them.