sending unit

[spanishmak]

can anybody tell me how the wiring is ran between the sending unit ,ignition switch and fuel gauge

[tsubaki]

Hot wire from the ignition to the gauge itself, usually the "I" terminal. Ground from the ignition to the "G" terminal. Also a wire from the "G" terminal to the sending unit. Then from the "S" terminal to the other post of the sending unit.
Connect the light wire to the instrument lights.

[tsubaki]

OH, and there are other ways to bastardize it too!
Dis don't help, holler.

[macojoe]

Its never going to work right and if it does it won't for long!!

I fill after each trip and have never had a issue!!

Now I have a bigger boat that holds 110 gal and do the same, have been all over and never think about gas, O yea and it has no gas gauge either!!

[dboyd351]

Originally Posted by macojoe

Its never going to work right and if it does it won't for long!!

I fill after each trip and have never had a issue!!

Now I have a bigger boat that holds 110 gal and do the same, have been all over and never think about gas, O yea and it has no gas gauge either!!

Yes, but the HOLE for the sending unit does make a convenient access hatch for pumping out water in your tank

[spanishmak]

OK then,can anyone tell me how many gallons this tank is.I heard they have an 80 gallon but dont know!

[tsubaki]

See if this is correct for the '78, 58 gallons with the original tank.
http://www.wellcraftv20.com/gallery/cat_1978/10_G

[tsubaki]

And update your signature/profile too so I ain't got to look so hard.

[macojoe]

they have twin saddle bags =40 gal

They have a 60 gal in floor on the 80's and up.

the older in floor tanks were like 40 not 100 %??

But there were none more then 60 unless some one added to it.