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Old 28-02-2010, 09:21   #1
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Wiring Schematic for Fuel Gauge on Nonsuch 30

I am going some work on a friends, nonsuch 30, I need a wiring schematic or print for the fuel gage, any help would be helpful,
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Old 28-02-2010, 11:16   #2
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Typical Engine Gauge Wiring Diagrams:
Engine Gauge Wiring Diagram - See also Gauge Testing Diagrams Cruisers & Sailing Photo Gallery

Testing Engine Gauges:
1 ➥ Testing Engine Gauges - See also Wiring Diagram & Sender Resistances Cruisers & Sailing Photo Gallery
2 ➥ Testing Engine Gauges (2) - See also Wiring Diagram & Testing Instructions Cruisers & Sailing Photo Gallery

If you know the specific engine, there’s several wiring diagrams (Yanmar, Perkins, Universal, etc) in my Photo Gallery:
Here ➥ GordMay's Images - Cruisers & Sailing Photo Gallery

Fuel Gauge Sender wire may be Pink.
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Old 28-02-2010, 20:30   #3
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fuel tank gage wiring

Thanks for the info,
the schematic does not look like how the boat is wired.
The engine is a westerbleke 27, The tank sender unit has three wires on it, and I think the gage has been replaced.
any ideas,
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Old 28-02-2010, 22:54   #4
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Old 01-03-2010, 05:41   #5
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I don’t recall ever seeing a 3-wire sender.
An isolated 2-wire sender is wired per my schematic, with the addition of an insulated return/ground wire.

You might try searching or asking at the Nonsuch Yacht Owners Discussion List:
Archives of NONSUCH-L@LISTSERV.AOL.COM
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Old 01-03-2010, 06:04   #6
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Can we see a picture of the top of the sender? any name or numbers on the sender?

3 wires suggests an aftermarket unit with a Pos. Neg. and switch for low level or water in the fuel. Do you have panel lights for low fuel or "Water in fuel?)
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Old 01-03-2010, 08:24   #7
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As always, please remember that even in a series of boats, seldom are two built alike. "new" production boats differ from this rule slightly though.
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Old 02-03-2010, 06:30   #8
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fuel gage

Yes, the there wire hookup from the sender had me wondering, good suggestion that possible after market unit. I will not be on the boat till next week will keep you informed, thanks again for the info so far..
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Old 02-03-2010, 07:02   #9
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Here’s a 3-Wire Fuel Level Sender, with Sense (Send), Pos. and Neg wires.
Livorsi Model # GSFLC http://www.livorsi.com/pdf/GSFLC3-GSWLC3.pdf

Apparently not as uncommon as I would have thought.
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Old 02-03-2010, 08:14   #10
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3 wire fuel sender

Yes,
thats looks like what is installed,
Thanks again, will let you know the results of my findings
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