Tips for installing halo projector headlights include using a hair dryer to dry the inside of the headlight assembly and then resealing the housing with silicon glue to avoid fogging. Another tip is to wear gloves during the installation to ensure oil from fingertips does not harm the bulbs. Installation steps may differ depending on the make and model of the vehicle, so always refer to the owner's manual before beginning the process.
Turn the car off completely prior to installing halo projector headlights, and then open the hood to access the engine bay. Locate and remove the cover and retaining rings holding the original assembly in place. Use penetrating grease on any mounting hardware that resists removal. Some vehicles may require removal of the front bumper in order to pull the headlight assembly free. Hold the assembly securely when removing the mounting hardware. Remove the wiring harness from the rear of the assembly, and clean the connector socket using an electric contact cleaner.
Position the new halo projector headlight assembly and replace the mounting hardware. Reconnect all wiring harnesses and electrical connections and replace the bumper if removed. Turn the vehicle on and activate the headlights to verify proper operation.