GL 320 BLUETEC (164.825) V6-3.0L DSL Turbo (642.820) (2009)
5. Insert relay terminal 30X for trailer (F4kL) into the load compartment fuse and relay box (F4).
6. Insert relay terminal 30 for trailer (F4kU) into load compartment fuse and relay box (F4).
7. Route trailer hitch wiring harness (24) along existing lines from the load compartment fuse and relay box (F4) to the rear SAM control unit
(N10/8).