I had a copy of the Vacuum hose routing diagrams at one time and I've looked through my 3 manuals and I can't find the one with the vacuum reserve tank!
I know it's in there somewhere as I had a nice copy of it. I think it was int he heating and a/c section but can't be sure. Anyone got an idea which manual to look in: I have the Fischer Body Manual, Chasis Manual and Assembly Manual

 

I don't have the 1975 Assembly Manual, but historically (1969-1972) vacuum hose diagram(s) were included in Section 1-5 of the Assembly Manual

 

6C section

 

Thanksl, I did finally find this BUT there was a diagram with the vacuum resevoir ! I looked for the area where the Vacuum Resevoir should be and there's no holes in that area....as if there never was a resevoir! Strange, but I think that's only needed for the heat/ac for various functions and it would seem someone prior ot me, just removed it.!