Well....reminds me of when I was replacing my Mustang GT/PP's steering wheel with a GT350's and I was disconnecting, and later reconnecting, the air bag. It reminded me a lot of dealing with explosives in my military days. Especially some of the BIG boys - always would have your comment in the back of my mind no matter how many times we checked for stray voltage, switches off, and mechanically safeties applied - just one of those things.
So yeah - while I've not done anything like that (I don't have any of those corals) with corals I know the feeling all too well. Best of luck. I'm sure you will do amazing!