I have an 06 g35 and the headlight engine room harness has become so corroded that the headlight no longer gets power. Ive looked around and there is basically no replacement for this one single harness. I dont want to spend too much money to fix this. Any ideas? Im no electrician, but Ive looked into rebuilding a harness from scratch. Any video links or advice would be appreciated. Thanks!

You could look for a used headlamp and salvage what you need from it to repair yours. Another option locate a headlamp that has been damaged and does not have a salvage any value and use that wiring harness. I believe all 06 used HID headlamps if looking for an 03 or 04 need to make sure it is an HID headlamp since the wiring harness for the Halogen and HID in 03-04 are different.