I’d explained that in your introduction post.
What he did was removed the reservoir from the rear plumbed in a line to the front hand brake as you figured out lol
Like you said all you need to do is remove that line and lever and move the reservoir back to the rear. All you need is the black connector but it’s probably still hooked up somewhere on your bars where he added the hand brake. Post a pic of how he plumbed that end . That’s the most common hack way that guys do it anyways. Either way worse case you just need that elbo
What he did was removed the reservoir from the rear plumbed in a line to the front hand brake as you figured out lol
Like you said all you need to do is remove that line and lever and move the reservoir back to the rear. All you need is the black connector but it’s probably still hooked up somewhere on your bars where he added the hand brake. Post a pic of how he plumbed that end . That’s the most common hack way that guys do it anyways. Either way worse case you just need that elbo