Fuel Gauge Meter

[GrowingLad]

Afternoon Guys,

On the back of the meter I've got I for Ignition, G for Ground and S for Signal/sender I assume.

Okay, Ground and Ignition on the gauge are sorted.

The sender unit is fitted to a Petrol tank and is the type with a sliding "donut" with two cables coming from the top of the unit.

How should I be connecting this up to the gauge. I wondered if the +ve of the sender is connected to the Ignition and the -ve of the sender comes back to the S of the gauge...but considering I'm dealing with Electrical and Petrol I don't fancy taking my chances and would rather hear from someone with much more knowledge than myself on these matters.

Thanks,
Simon.

 

[WF36]

I fitted one of these to my rib last week, were there not instuctions with the manual? I havent got a clue, but between me and my 16 year old brother I managed to wire one up and it works fine. Sorry I can remeber EXACTLY which wires go where, I recall two wires going to the negative. thats all I can remember tbh - im bogged down at work at the moment so its not right on my mind!

 

[GrowingLad]

Unfortunately I don't have the destructions as all the gauges were orignally fitted by someone else...as I don't trust the way they were connected before (as I've already found several mistakes)...I've got nothing to go on...plus as these little gauges have a steep old price I don't fancy making a mistake and melting one....I've managed to fit all the others okay...just don't fancy ballsing this one up when Petrol is involved.

 

[rogerthebodger]

Have a look at diagram C in this doc

 

[GrowingLad]

Perfect, Thanks Rodger!!

/forums/images/graemlins/smirk.gif

 

[boatmike]

If it is the same as mine (and I assume it is from the description) the black (ground) lead needs to go back to the ground terminal of the gauge and the red to the S terminal.
Edit. Just seen Rogers input. Quite correct but I would lead the black ground wire back to the gauge and common ground both together to eliminate any resistance which will give you a false reading. /forums/images/graemlins/wink.gif

 

[Refueler]

Most senders like this use one lead to negative bus, other to sender gauge which is connected to ignistion to power it when switched on. Basically it's the circuit you complete.

If you are concerned about the connections ... take both of away from that tank and connect - move the float and see what happens.

 

[robind]

If it helps? as the donut and its magnets move up and down the shaft they vary the resistance on the the negative line and so the gauge moves across! The sener and the gauge have to be matched and an American gauge and a european sender won`t work? ( it usually runs the opposite way to normal(as the tank fills, the gauge goes down to low etc)