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Old 08-01-2008, 10:16 PM
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Fuel Tank Sender.. requires earth?

Hi,

I've fitted a new tank to a Bedford truck, its bolted to the right hand main chassis rail.. I've used rubber strips between the tank and the steel straps that strap it to the rail.. effectively the tank is therefore insulated from the rest of the truck...

The fuel sender would require the tank to be earthed wouldn't it? There's only one connection on the top of the sender.

Cheers, Dunc

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Old 08-01-2008, 11:45 PM
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Run a seperate wire from one of the mounting screws on the sender back to the ground, (earth), on the fuel gauge. This is the only way to be assured of an accurate reading.


You can just run a ground strap from the sender mounting screw to the body, (or where ever your gauges ground), but those connections usually corrode over time and give a false reading at the gauge.

A gas sending unit is basically a variable resistor, and the gauge reads the resistance. When the connections corrode, it adds to that resistance, causing gauge error or a total failure to read the sender .

Hope this helps.

Mikey
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Old 08-02-2008, 01:02 AM
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Quote:
Originally Posted by powerrodsmike
Hope this helps.
Mikey
Thanks Mate! That was perfect.. all wired up.

Dunc.
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