with extension kit 1 or 3 (art.no. 721075 or 721077)
with extension kit 2 or 3 (art.no. 721074 or 721077)
If a vehicle has check-control (lamp monitoring),
an additional installation kit (article no.: 721414) has to be assembled (connection to check-control interface of 7- or 13-pin wiring harness,
by-passing of the monitoring electronics).