Fuel Level Sensor: Description and Operation
AH47.10-P-7000-02TI Information On Fuel Level Sensor
The fuel level sensor, right half of tank, (B4/2) and fuel pump (M3) form a single unit.
On the fuel level sensor, left half of tank (B4/1) and the fuel level sensor, right half of tank (B4/2) the connecting lines are fitted with plugs at the swirl pot.