WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.
Position wiring harness.
Connect connectors (1)
and (2)
and lock.
Courtesy of BMW OF NORTH AMERICA, INC.
Secure the vehicle wiring harness (2)
on the holders (1)
.