My Anzo's also have the Rubber Caps. You pull the rubber cap off and the bulb is behind it. You have to cut a hole in your rubber cap to pass the wires through and your HID's should have a rubber boot on the harness. That rubber boot will pop into the hole you cut to keep everything waterproof. My only problem is that the Anzo lights use a different low beam projector bulb than the OEM lights did, so I had to buy a different kit for them. If your new lights use a different bulb, move your H11 kit to your fogs lights!