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Subject:Re: Ethnicity of Oil Pressure Switch
From:Jfp w/2 wbxs
Date:Thu, 18 Apr 2002 03:28:03 +0000

Hi Steve,

I think the color can vary from supplier to supplier so color might not be a
good way to I.D. a switch. Note the following:

... ... 081A is a 0.9 bar swt, grey and is normally OPEN

... ... 081C is a 0.3 bar swt, brown and is normally CLOSED

... ... 081E is a 1.8 bar swt, white and is nomally OPEN

The switches I've seen had the bar rating stamped on the side of one hex
face. Also a 0.3B swt will have ohmmeter continuity between the electrical
contact and the swt body with NO pressure applied. The 0.9B & 1.8B will show
meter infinity.

Regards, John

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