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Date: Sat, 17 Feb 2007 19:17:53 -0500
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From: "Don Ryan" <djryan1@sbcglobal.net>
References: <list-1840026@logan.com>
Subject: Re: [LML] Re: VEP Pressure Switch Wiring Information
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Easy to check it out!  Put a length of Tygon tubing on the press input conn. 
Make it long enough to hold a foot or so of water, (below the port) and make 
a U so that you can read the diff in water levels in inches.
Connect your voltmeter to measure resistance on the leads. I expect one set 
will be normally open and one set normally closed. The white is probably the 
normally closed lead to the blue. The blue to red then will close as you 
blow on your water manometer to get a few inches of water diff in the water 
levels.
Adjust the screw to make it close at about 4" of water, which corresponds to 
about 95 mph.