GL 320 BLUETEC (164.825) V6-3.0L DSL Turbo (642.820) (2009)
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12. Insert black connector (29) of trailer hitch wiring harness into free slot of rear SAM control unit (N10/8), as shown and lock in place.
13. Detach black connector (30) of vehicle wiring harness on load compartment fuse and relay box (F4).
14. Pin brown/white line (br/ws) of trailer hitch wiring harness into contact cavity 1 of the black connector (30) of the vehicle wiring harness.
15. Insert black connector (30) of vehicle wiring harness into load compartment fuse and relay box (F4).
