FI Valvetronic Exhaust Install help

[Ajc1100]

UPDATE: After some researching, I went ahead and used that vacuum line to run the exhaust. Everything is working now, and I couldn't be happier about how it turned out! If anyone else with this system or a similar exhaust needs help, let me know and I can go snap a few pictures or describe what I did.

Hello all, my new FI exhaust just came in the mail, and i'll be getting it installed tomorrow. The shop has done valvetronic before, just not on an M3. First off, can anyone confirm if this is a good vacuum line to tap into? It's the line beside the brake fluid reservoir.



Also, the control unit needs to be plugged into OBDII which is easy enough, but It also needs power and a ground location. The guide included with the exhaust is literally just a wiring diagram lol. Please if anyone has installed one of these or anything similar, I could use some help getting clear instructions and advice for the shop. Thank you!

Photo of diagram included:
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