All the E32 headlights we sell come in pairs and ready to install. Choose from various styles and colors for your E34: chrome, black, projector and/or halo. Installation is simple, but professional installation is highly recommended. The installaton procedure involves the replacement factory headlights; our E34 headlights come with factory mounting points. Most E34 headlights come with plug & play wiring harness for easy installation. Low, high & parking / blinker bulbs are also included with most headlights (please note that the bulbs may not be included). All headlights are D.O.T compliant so you won't get harassed by the authorities. Make your 525i, 540i, 535i, or M5 look much newer and nicer with the addition of headlights from Bimmer Parts Wheels.