S80 L5-2.5L Turbo VIN 59 B5254T2 (2004)
Use a new connector, P/N 978305.
Install the yellow-red cable in terminal 1.
Install the brown cable in terminal 5.
When the cable terminal is inserted in the cavity a click is often heard when the primary catch engages.
Pull the cable gently to check that the cable terminal is properly seated in the cavity.
Closing the secondary catch