To fit

Fit the level sensor to the brake fluid reservoir.
Plug in the connector (A) for the brake fluid reservoir's level sensor.

Fig 1: Identifying Brake Fluid Reservoir's Level Sensor Connector
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Fit the coolant reservoir.
B207/A20NFT/LHU: Plug in the connector (A) for the sensor unit, combustion (CDM).

Fig 2: Identifying Sensor Unit, Combustion (CDM) Connector
Courtesy of SAAB-SCANIA OF AMERICA, INC.
B207/A20NFT/LHU: Unplug the connector (A) for the coolant's level sensor.

Fig 3: Identifying Coolant's Level Sensor Connector
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the wing cover from the left-hand front wing.
Close the bonnet.