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I believe that I accidentally pulled my vacuum hose off under the dash that activates the wiper door. It stays open all the time. I have found a vcuum hose hanging under the dash but cannot find where it goes. Is there someplace I can find a diagram?
The easiest [and first] place to check is at the manual override switches under the steering column. Each switch should have two vacuum lines on it. It is likely that one has become dislodged and should be easy to determine which is missing and reconnect it.
If those 4 lines are already installed on those override switches, the next most likely candidate would be the vacuum/solenoid switch that is mounted to the backside of the tachometer housing. That takes a little more work (and, maybe, a "nimble midget") to get to and work on.