If you haven't already got the answer to this, here goes. There should be a sticker on the firewall or radiator support that shows all the vacuum diagram. If not there, get a Chiltons or Haynes manual. They have the vacuum diagrams in there too.
84 Wagoneer, 207k miles with 4 angry mice under the hood. Uniden CB, Kenwood 2-meter. Tow Hooks, front skid plate. Not pretty, but it runs well, goes where I want it and it's paid for.