Fuel tank sender unit - 1947 Morgan 4/4

So use the one you have, upside down and with the wire bent a bit if necessary.

Ian

Smiths made a universal sender kit. There are others that do the same.

Not necessarily so. There are two types of gauge, the one that flaps around when you go over a bump with a half full tank, and the one that stays steady. The one that flaps around is normally connected to directly to a live ignition circuit and reacts directly to the sender unit, like an ohmmeter would. The type that holds steady usually has a heater and bi-metal strip inside, and works off a stabilised 10 volt supply. Depending on which way the bi-metal strip is designed to bend when heated, increased heat can result in either a higher or lower reading. So it is possible for a gauge to be designed so that it reads full with the sender at minimum resistance, though whether your is, I can't say. What you need to do is put a meter on the sender unit you have bought and see which way round the resistance changes as you move from empty to full. Your gauge is expecting the opposite.

I am not familiar with your tank unit either, but is there any way of reversing the ends of the variable resistance electrically?

Jim

Just as a thought why not ask the Morgan Company if they can suggest a unit - the company seems to take an interest in all there cars old or new.