Fuel Gauge and Sending unit

J

Jacksonboat

.
Jun 22, 2011
43
Hunter 35 Legend Kingston
Confused about this. I want to replace my fuel gauge and sending unit from the original which is simply a non-electric insert right on the tank. I want to put an electric one in and mount the gauge where I can actually see it.

I have found several online and in stores (teleflex and moeller primarily). but I cant seem to get a straight answer on a couple of questions.

1. is there a difference between a set for a diesel tank (mine) and a gas tank?
2. is it as straightforward as it seems?
3. Certain ones have different ohms (?) ratings, why does this matter and how will I know what to get?

(its rainy here so forgive the multiple posts on different subjects - appreciate all the help I've been given so far and going forward.)

Thanks
 
Dan Johnson

Dan Johnson

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Oct 14, 2005
2,191
1983 Hunter H34 North East, MD
Jackson...

I added a Teleflex unit to my tank years ago when I did an access port and clean-out. Wiring is simple and meter ohmage is pretty much standard among fuel gages. The Telex kit I used had an adjustable float that I was able to set to the proper height for full and empty reading. I added a switch to the circuit to cut off power when not needed to view gage so as to not run the battery down when sailing. I put the gage in a cockpit cubby at the helm for ready access.

See pix...
 

Attachments

J

Jacksonboat

.
Jun 22, 2011
43
Hunter 35 Legend Kingston
Perfect thanks . But you turn it off when sailing as not to draw too much from the battery - does it draw that much?
 
Dan Johnson

Dan Johnson

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Oct 14, 2005
2,191
1983 Hunter H34 North East, MD
Don't know exact current draw when in use but assume there to be one. Minimizing current use is important when VHF and stereo alone come close to using 5 amps when both are turned on. Add autopilot, GPS, and instruments (and nav lights at night) and any unnecessary use goes toward longer house battery use when under way.
 
S

Steve Dion

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Dec 2, 1999
15,184
Hunter Vision-36 Rio Vista, CA.
WEMA USA has the insert for the tank and the display units. They are direct replacements for the manual unit.

I wired mine to the ignition circuit so it is only on when the key is on.

http://wemausa.com/
 
J

Jacksonboat

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Jun 22, 2011
43
Hunter 35 Legend Kingston
Hah that's great, can drive there literally in 3 minutes from boat have been in a dozen times and have never seen wema products but that doesn't mean they aren't there! Thanks
 
Bill Roosa

Bill Roosa

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Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
Your tank is going to be the critical design component. the float needs to cover the full range of tankage, that may or may not be difficult to locate a float that can do that.
I'd recommend a unit that sits on the existing gauge and records the needle position then converts it to a standard resistance signal for the remote gauge
 
H

H30Gary

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Oct 27, 2011
154
Hunter 1980 Hunter 30 San Diego, Mission Bay
Bill, do you have a lead on such an analog to digital converter? The analog fuel gage on my boat is located where it is impossible to read. I'd love to convert to a digital readout located somewhere I could see it!
 
J

Jacksonboat

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Jun 22, 2011
43
Hunter 35 Legend Kingston
Don't think the one on it works right now so replacing the whole thing - found the tank schematics here on the site somewhere before - it's a strange design hunter legend 35.6 1987
 
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