Guys two questions:

1. in pic#1 the S vacuum line connects to the control assembly inside the dash. There is some sort of a check valve in pic#3 mounted right under the magnetic valve where this line connects per pic#2. I assume it is the smaller end facing towards the firewall where this S line connects too?

The other end bigger end will connect to magnetic end D and M via 3-way line. Is my understanding correct?

Also, does it matter if the S1 and S2 lines on the vacuum tank are reversed?

Interesting.  Where does this hose go to?  That's the one that would go to the bottle.

1 hour ago, Zed Head said:

Interesting.  Where does this hose go to?  That's the one that would go to the bottle.

It goes to the bottle I've never paid attention to.

Paying attention is like having bullets in a gun. I missed that one though. Damned if I'm not getting old.

2 hours ago, Zed Head said:

Interesting.  Where does this hose go to?  That's the one that would go to the bottle.

From manifold it goes to the check value (mounted under the two magnetic valves) and from there to the bottle.

Edited Saturday at 05:24 AM5 days by MH77280Z

Mystery Solved!!

20 hours ago, siteunseen said:

My early '77 doesn't have that bottle, just the charcoal cannister. Anybody Anyone know what year they started using those bottles?

@Zed Head the cross out text isn't the same as strikethrough? 

1974