Hi, do you have to connect to ground like the battery or frame?Nothing wired to the fuse box...there are the ECU connectors (like a rectangular box) that connect one side to the existing headlight wire and the other side to a ballast...then, one cable from the ballast goes to the wires coming from the new HID bulb. Totally plug and play...these baby's really light up the road...get a set---you won't be disappointed. And, if u get them and don't think you can do it...you can either find a shop or return them. I had no idea what I was doing before attempting so I paid a shop who specializes in light conversions $50 to install...he asked me to watch him install so I would learn in case I ever wanted to remove them. We didn't bolt the ballasts down but tied them with those plastic adjustable ties to the far sides of firewall.