fuel gauges wiring--am I close?

dicktaber

Petty Officer 2nd Class
Joined
Sep 3, 2001
Messages
183
Hi all and thanks again for a great board! My 72 Crestliner 17' v-hull came with an integral bow mounted fuel tank (still had the filler and vent fittings) but sometime in the last 30 years someone removed it; likely due to contamination/corrosion. It was fitted with two 6-gallon plastic tanks when I bought it last fall. Through this board I found a fine gentleman (Val V) who sold me a new 18 gallon plastic tank which fits nicely in the bow and had fuel level sender, mounting brackets, etc--all ready to go, and at a very nice price as well. (I think he has more of them if you are interested.) It is now mounted; filler, vent and supply lines are hooked up and I'm ready to try it out. I found a (used) fuel gage but trying to hook it up without instructions is frustrating. Taking just the gauge, I hooked purple to positive, black to negative, the remaining two (if I guess right) should go two the two wires on the fuel gauge sender, which should be a variable resistor (once again, guessing). Anyway, with these two wires open, gauge reads empty; with them connected directly to one another (not to the fuel tank sender wires), it reads 3/4, not full. At this point the fuel sender isn't even in the circuit, so I suspect the gauge. Sound right?
 

crab bait

Captain
Joined
Feb 5, 2002
Messages
3,831
Re: fuel gauges wiring--am I close?

the gauge should have 3 post or wires.. <br /> 'I'/ IGNITION , 'S'/ SENDING UNIT, 'G' /GROUND..<br /><br />tank should have 2 post/wires .. sending unit & ground..
 

dicktaber

Petty Officer 2nd Class
Joined
Sep 3, 2001
Messages
183
Re: fuel gauges wiring--am I close?

Thanks Crabbby--<br />Hooked it up again in accordance with your instructions. As soon as I put some fuel in it I'll let you know how it works out. Somehow I thought that the sender would be in series and act like a variable resistor. Regards, Rich
 
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