This kit includes the harness to make the changes for the new signal lights. It does now include all new harness for all the bulbs, so if you need those, be sure to order them separately. This kit replaces the socket for the park/turn signal light bulb, so includes the new wiring for that change. You will also have to purchase the bulbs separately, which LMR sells. Great looking lights, adjustable and worth the time for the bulb change.