New fuel guage, sender unit - still not working

jjuriga

jjuriga

Junior Member
I have just replaced my dashboard and all gauges. Everything is working great except the fuel. It was broken before the project also...

I have a full tank of gas, the gauge has power and is grounded properly; all connections are new. Pink wire is attached and runs to the sender. I have a ground tab attached on the sender. Then the green wire(s). One coming from back and one going out. I have to trace these tomorrow, but am I correct in assuming that one heads to the engine or battery, the other to the fuel cap bracket? I have to open it up tomorrow... but I'm pretty sure the green one does NOT go to a neg terminal on a battery. Not sure about the ground on fuel cap bracket.

Its driving me nuts!!!
 
Funny how things work out... I start fiddling around behind the gunnel hatch near the fuel hose... boom, the fuel vent host/fitting broke in half.
 
Don t say Boom when working with gas!

I think ,on my V, the tank is bonded to the fill and to the battery 1 wire from the sending unit going to the engine. I have never used a fuel gauge. When i topped off the tank i would set the trip on my gps. I figured 2 mpg at 50 gallons and refilled at 75 miles. Usually within 3 gallons of my estimate.

The new motor records fuel flow and consumption, so still don t have a gauge. And I still set the trip on the gps (old habits...).
 
jjuriga said:
I have just replaced my dashboard and all gauges. Everything is working great except the fuel. It was broken before the project also...

I have a full tank of gas, the gauge has power and is grounded properly; all connections are new. Pink wire is attached and runs to the sender. I have a ground tab attached on the sender. Then the green wire(s). One coming from back and one going out. I have to trace these tomorrow, but am I correct in assuming that one heads to the engine or battery, the other to the fuel cap bracket? I have to open it up tomorrow... but I'm pretty sure the green one does NOT go to a neg terminal on a battery. Not sure about the ground on fuel cap bracket.

Its driving me nuts!!!
Click to expand...

You need to ground the tank to the neg bus.

Test by jumping a wire from the tank to neg. Your gauge will probably work.
I just chased this down on my boat the ground of the tanks were off and fallen down and hidden.
 
SkunkBoat said:
You need to ground the tank to the neg bus.

Test by jumping a wire from the tank to neg. Your gauge will probably work.
I just chased this down on my boat the ground of the tanks were off and fallen down and hidden.
Click to expand...

I'll try it out tomorrow. Going to take the afternoon off and get into it. Thanks!
 
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