Terminal not properly seated

1 = Locked terminal

2 = Male half

3 = Female half

4 = Seal

5 = Intermittent contact

6 = Unlocked terminal (Hidden by wire seal)

7 = Seal

Check for unlocked terminals by pulling each wire at the end of the connector.

Fig 1: Identifying Wiring Harness Splices And Connectors Examples (Terminal Not Properly Seated)

Courtesy of FORD MOTOR CO.