1968 Windshield Wiper issues
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2nd Gear
Joined: Apr 2004
Posts: 2
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From: Hinckley OH
1968 Windshield Wiper issues
I have a power drain that I believe is coming from my windshield wiper motor. I am removing it and having it rebuilt but in the mean time the wiper door just spontaneously goes up and down while I'm driving the car. The wiper switch has not worked for some time. What controls the vacum and do I need top replace anything other than the switch?
thanks\
Jesse
thanks\
Jesse
Le Mans Master
Joined: Mar 2000
Posts: 9,127
Likes: 2,326
From: Pottsville, PA. USA Home Of America's Oldest Brewery Yuengling
There is a vacuum electric switch that opens the door when the wiper switch is turned on. This switch is mounted on the back of the tach and has a power plug and two vacuum hoses on it.
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Originally Posted by Corvette ED
There is a vacuum electric switch that opens the door when the wiper switch is turned on. This switch is mounted on the back of the tach and has a power plug and two vacuum hoses on it.
check that switch. If you pull one of those vac hoses off the switch (or it falls off.... or it leaks), not sure which one, you will hear a vacuum hiss, AND the wiper door will levitate. 
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
Had a battery drain issue in my 68 as well. It ended up being a bad wiper motor. THe park switch in the motor was constantly activating the solenoid and keeping hte wiper door up. The way the system is set up, there is always power to the wiper motor even when the car is off, so this solenoid was always "on" which killed my battery. Sounds like you have the exact same issue as I did, except yours is intermittent. I replaced my wiper motor and all problems were solved.
Good luck.
~Rich
Good luck.
~Rich
