I have an 05 g35 and I bought 06 headlights just the bare unit thinking I could just swap my harness and headlights over but I did not know they were not the same , should of researched a little more I guess but if anyone could please tell me what I would need to do to complete the swap I would appreciate it. Thanks

 

Buy the bulbs for the projector setup and then just transfer over the ballast and plug everything in. It's about as simple as it could possibly get...

 

if you dremel or cut out notches for the bulbs on the 05 hid bulbs to fit the 06 projectors it will fit.