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Old 01-12-2014, 08:55 PM
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thatsmrmastercraft thatsmrmastercraft is offline
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Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
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Ditto that on the sending unit. Gauge function test is as easy as disconnecting the wire at the sending unit, then grounding that wire. You should see no pressure, then full pressure respectively. If you do, then your gauge and associated wiring is all OK and you know the sending unit is in need of replacement.
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