Rectangular Waterproof Connector

WARNING: This page is about a different car, the 2004 Mitsubishi Eclipse, 2004 Dodge Stratus, and 2004 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.

Disengage the front holder with a screwdriver and remove it.

Fig 1: Disengaging Front Holder With Screwdriver
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Insert the tip of a screwdriver [0.8 mm (0.03 inch) width] into the connector as shown in the figure, push it lightly to raise the housing lance, and pull out the terminal.

Fig 2: Inserting Tip Of Screwdriver Into Connector
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Press the contact point of the female terminal down by holding a screwdriver [1.4 mm (0.06 inch) width] as shown in the figure. Lightly squeeze the outer edge so the flats are parallel with the bottom.

Fig 3: Pressing Contact Point Of Female Terminal Down By Holding A Screwdriver
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.