Retrofit Wiring Harness For Switch For Fully Electric Trailer Hitch On Driver Door - AN31.19-P-0010-04LWG

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

Model 253.3/9

Remove vehicle's wiring harness.
A different number of connections may be present depending on the equipment installed.
Route new wiring harness (28) in same way as removed wiring harness and secure (arrows).
Tie back excess connections of new wiring harness (28) and insulate.

Courtesy of MERCEDES-BENZ USA