Haven't been able to find this topic and I need some advice. I have a 2008 SE 4x4 and have always liked the OEM P4X roof lights. I just acquired a set from a crushed 2011 along with roof top harness, triangle grommet, and dash switch. I am hoping the rest of the wiring may be in my existing harness? Has anyone else done this upgrade? Is there an exact location I need to drill through the roof and what size hole? Any tips (other than "RUN!") would be greatly appreciated. Thanks.