I believe the 07's have a plug for trailer lights as the 08's do not...you can buy a plug from a local automotive store and wire it yourself...I know when I did mine it is a single filament set-up from factory so I only wired into clearence...Remember if you wire them up the OEM bulbs are too brite..Use the Sylvania P# 97 bulb and it is a almost perfect match..I only had to wire one side as they were all ready connected..