You need to get inside the sender unit and make the wire connection to the other end of the wire wound resistance ? Then follow the advice of putting an additional resistor into the circuit - Shouldn't that be in parallel with the sender resistance ?? However, DO NOT FOLLOW my advice until someone else agrees / says that it will not ignite your fuel tank. Just a thought.
This may give you a clue ??
https://www.austin7.org/Technical%20Arti...20Working/
Sorry, scrap this idea,
a) If it is a modern sender unit, you won't be able to get inside it.
b) If you put the resistance in parallel to change from 150 ohm down to 50 ohm, it will not be linear.
On other forums they talk about using an Ardunino (or other) micro computer but the Austin has so much electrical noise, it upsets the microcomputer.
Bob
This may give you a clue ??
https://www.austin7.org/Technical%20Arti...20Working/
Sorry, scrap this idea,
a) If it is a modern sender unit, you won't be able to get inside it.
b) If you put the resistance in parallel to change from 150 ohm down to 50 ohm, it will not be linear.
On other forums they talk about using an Ardunino (or other) micro computer but the Austin has so much electrical noise, it upsets the microcomputer.
Bob