wiring fuel guage? never done a built in tank

[tashasdaddy]

2 wires on sender ground, sender wire. ( tank ground wire) on guage pos. ground, sender. does the sender groud need to run to the guage? or can it be run to a common ground? diagram would be nice.

 

[OBJ]

Re: wiring fuel guage? never done a built in tank

It can be run to a common ground TD. Basically the sender is a reostat (sp?) which changes the voltage signal to the gage.

 

[tashasdaddy]

Re: wiring fuel guage? never done a built in tank

thanks OBJ, thats what i thought, ended up with bad sender, it kept pegging the guage.

 

[rodbolt]

Re: wiring fuel guage? never done a built in tank

if its a metal tank the tab for the bonding wire, usually green, is NOT supposed to be used as a ground path.
and ,depending on the sender screws, you have to use a gasket that makes a positive contact between the sender and the tank.

 

[tashasdaddy]

Re: wiring fuel guage? never done a built in tank

i have bonding wire(green) groung wire(black) attached to screw holding sender to tank, and the sender wire(pink or red) green wire is disconnected, where should it bond to? (aluminum boat)

 

[rickdb1boat]

Re: wiring fuel guage? never done a built in tank

Mine goes to the filler.....

 

[rodbolt]

Re: wiring fuel guage? never done a built in tank

with a metal tank and a metal filler the filler,tank and negative battery terminal must be bonded, the sender ground wire goes to the sender itself from a negative battery post or terminal strip. the gasket also must have a staple or rivet to bond the sender to the tank.
the idea is if anything goes wrong no static charges can build as all the metal parts are held at the same potential. no potential difference and no sparky sparky from triboelectric charges. man I love that werd .
triboelectric is fancy talk from the US Navy that means static charge.
but the bonding path is not used fror grounding.
dont run the tank sender ground to the green bonding wire.

 

[tashasdaddy]

Re: wiring fuel guage? never done a built in tank

thats what i thought, just making sure. new sender and working well, thanks guys.