This is a brass "T", used on the primary vacuum line
This is the primary vac. hose.
The main line coming from the manifold, is at the bottom here. It has the enlarged curve at the back end, because I did not trim the hose, when I added in the "T" connector. I may trim this later.
A close-in view of the connection.
Routed back thru the firewall.
Picture here courtesy of John P.
It comes out through the firewall in the car here.
There are no electrical connections to the actual boost gauge itself.
As far as the electrical goes, it's simply connected to the dash lights.