[speleos]

That 'ballast' in the video is likely the igniter for HID headlights. 2012 Acadias have a totally different headlight setup.

 

[speleos]

Well, that video says 2014. Guess it will be similar to yours.

 

[speleos]

It’s a $40 power module or a $500 headlight… was hoping someone else tried it

If you want to know whether someone has tried it through the years, search the forum for your answer. You'll get good results in the search when you use a string of relevant keywords and the "advanced search" tool.