I remember checking the two inlets at the main vacuum hose to see which one generates more vacuum. It turns out the accessories line generated more, 17 in Hg compared to 16 in Hg. So I tapped into that line. I'm pretty sure all my leaks are gone because I replaced the central locking actuators and the central locking system works for many days w/o losing vacuum.

The check valve I installed allows vacuum to run towards the main vacuum hose, but prevents any leaks from moving backwards to the switch (which we both verified "bleeds" vacuum). The check valve is installed with the arrow pointing to the direction of the main vacuum hose.

What is the best way to create a reservoir?

When I connect the lights to the switch, and then the Mity Vac to the switch to simulate the car's vacuum the headlights do not move at all even if connected properly and in any setting of the switch.

__________________
http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg