Fuel tank level indicator

C

Carl

Junior Member
Can someone shed some light on which wires go where on the tank level indicator? I have a red and black wire that look like they were at some point in their life connected to the indicator. They are both broken off and I don't know which wire goes on which connection. One connection is a spade type connector that goes on the tab which is part of the indidatior. The other is an eye type connection that goes under the small nut which is one top of the TLI. Thanks.


Carl
 
ONE WIRE COMES FROM THE FUEL GAUGE - IT SHOULD HAVE VOLTAGE WHEN THE IGNITION SWITCH IS ON - THE OTHER SHOULD BE A GROUND WIRE - THE ONE WITH VOLTAGE SHOULD GO TO THE SPADE CONNECTOR, AND THE OTHER SHOULD BE THE GROUND
 
Connect the red wire to the spade lug and the black to the ring lug. The worst that will happen if it's reversed is that the fuel gauge will peg downward reading backwards. If that's the case, reverse the wires. That's my guess anyways. ;)
 
My gauge has no wires!! Never is wrong, and it always works!! I will never get a new one to work as good as this one and I never going to try to replace it. I am very happy with it!!!!!!!!!!!!!!!!!!!!!!!!
 
ben there done that
this is thew run down
there is no voltage to the sening unit
it works off the ground wires
its the resistance that makes it work
one ground goes to the spade on the sender and the other ground goes on the sender from a bolt or the ground spade[it doesnt matter] to the gauge
the power goes to the back of the gauge
it says power or ignition
the theres power to the light
thats it ground ign, light
and remember NO POWER TO THE FUEL TANK VIA SENDER UNIT.only ground
 
franc couldnt get on the site but i just replaced my gauge and really didnt know how to hook up the wires so i asked the mechanic on my job and he told me how it works and said that no power should ever go to the sending unit only the grounds do its like when you get a headlight that is loe its the groud wire causing it so i had a west marine catolog and it has a diagram of the sending unit and it shows that you have a groud going to the unit and a secound ground coming off the unit to the gauge so there
check it out
 
I CONCEDE ------ TO A POINT ---- BUT IF YOU TAKE A VOLT METER AND TAKE THE GROUND WIRE COMING FROM THE FUEL GAUGE GOING TO THE SENDING UNIT AND MEASURE IT - WHAT ARE YOU GONNA FIND ---- VOLTAGE - AND IT'S LOOKING FOR A GROUND - THE FUEL GAUGE NEEDLE MOVES, HOW MUCH DEPENDS ON HOW MUCH CURRENT FLOWS THRU THE GAUGE LOOKING FOR A GROUND - THE SENDING UNIT IS TECHNICALLY AN VARIABLE RESISTOR - WHAT DOES A VARIABLE RESISTOR DO? IT RESTRICTS CURRENT FLOW ( VOLTAGE) BY RESISTANCE. SO THERE!!!!!
 
Actually both are right just depends on the gauge you buy. Better ones that have a light in them connect to power and ground at the gauge and they look for a varied ground. but those are one wire sending units

The cheap and dangerous ones have power at the tank. Not the thing i want in my tank is power which can cause corrosion. Especial with a metal tank. Plastic can be dangerous too they will build up static when you have power at the tank.
 
ook at the boaters world cat, or the weat marine cat, not sure which out had the diagram but it will PROVE that im right again
p.s. apoligese[i think i spelled that wrong] accepted
 
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