2005 x5 e53 4.8is grounding issue by the ac compressor

[Feltsandel]

I have changed out my ac compressor and I have one last ground cable to hook up.....somehow I missed what it came off of....I have looked everywhere....videos, images, manuals, and I can’t find where it goes....I feel like it must have come off my ac compressor bolt, but I don’t want to start the car without a major ground attached to the chassis.
Does anyone with an e53 2005 4.8is have any idea where this attaches to?
I am guessing it went to the top bolt on the ac but I don’t remover seeing it come of of that and I don’t want to fry somethimg
Thanks I’m advance