As a follow up, the SWCG has been installed, except for the control unit which is still in the box, but they forgot to include the bypass I had requested at the design stage. I don't think it'll be difficult to splice in, but I think the PB should have had it in his notes to put in.

Carl, if you're still hanging around this thread, you mentioned quick releases on either end of the manifold. Are they threaded couplings or is it something else?

Here's a pic with my sketch of where I want to put the bypass: