Does anyone have pics or a good description where the vacuum lines are under the hood that control the floor/def/vent switching?? Thanks

 

Been out of the game a few years, (2 decades) we used to have a manual, EVTM. Thats electrical, vacuum and troubleshooting manual. Go to Helm.com believe you have an on site use of it for a 3 day period for $10.00. Its the publisher for the Ford Manuals and such.