This BorgWarner BWD PT24 lamp socket is the perfect replacement for your 1975 Mercury Grand Marquis' front parking light. It features OE-certified quality and a smooth black finish. With a voltage of 12V and an incandescent lighting technology, this lamp socket is designed for a warm white light color. This product is a vintage part that comes with no manufacturer warranty, but it is a great fit for your vehicle's left, front, or right placement. It has an interchange part number of 8534 and is not intended for universal fitment. Please note that this product contains a chemical known to the State of California to cause birth defects or other reproductive harm under California Prop 65 Warning.