Pinpoint Test X: The Trailer Lamps Are Inoperative - Parking Lamps
WARNING: This page is about a different car, the 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Pinpoint Test X: Trailer Lamps Are Inoperative - Parking Lamps (X1-X3)
Courtesy of FORD MOTOR CO.
Fig 2: Identifying Pinpoint Test X: Trailer Lamps Are Inoperative - Parking Lamps (X4-X5)