[Richard]

Easier than you think if I have this right.

For the service air line, come up to the air line that feeds the six pack. It usually has a gauge on it. Install a tee and pull your service air from there.

Use the air line that you used for the M&G for the metered air line.

Of course test this out first.

As a short cut for the sanity test. Use a couple of quick connects to temporarily plumb the AF1. Put the metered quick connect in the existing M&G coupling. Put the Air supply line quick connect into that air line connection in the lower left rear of the passenger engine bay. That will allow you to test the function.

I could have this all wrong, but try it to confirm before you tap into any lines.