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Mercedes-Benz GLC (2016–2022) Stealth Trailer Wiring Installation

Vehicle Coverage: 2016–2022 Mercedes-Benz GLC; exact trim and build date are verified before scheduling
Output: Passive trailer-light wiring supplied with the compatible Stealth towing package
Finished Connector Location: Outside the vehicle at the concealed hitch, secured on the Stealth magnetic holder when not connected to a trailer.
Availability: Installed with the original hidden-hitch towing package
Connector Location: Outside the vehicle at the concealed hitch, secured on the Stealth magnetic holder when not connected to a trailer.
GLC trailer wiring is offered only as the passive wiring supplied with the compatible Stealth towing package. It is installed while the rear fascia is already removed, then the connector finishes outside at the hidden hitch.
1. Using the Open Rear-Body Access
The bumper-removal stage of the hitch installation provides access for protected module and connector placement.
2. Installing the Passive Lighting Module
The module is mounted securely and connected to the required lighting circuits without adding a programmed active controller.
3. Completing Protected Power and Ground
Fused power and structural ground are routed with strain relief and abrasion protection.
4. Routing Through the Hitch Provision
The trailer lead is carried through the Stealth wiring location and kept clear of exhaust heat and the removable latch.
5. Mounting the Magnetic Connector Holder
The connector is positioned outside at the hitch where it remains accessible for towing and can be tucked away afterward.
6. Testing Before Final Reassembly
Every trailer-light function is verified before the fascia, sensors, lamps, and cargo trim are restored.
No Active Harness Installations: We do not install active factory-style modules. They cost more, often require programming, and may not allow us to verify every function before leaving the appointment. A small connection error that is immediately correctable on a passive harness can otherwise require another bumper-removal appointment.
Choose the towing package during the original hitch installation if towing may be in your future. Adding wiring later is considerably more expensive because the bumper must be removed again and the concealed hitch must be modified for the wiring hardware, repeating much of the original installation labor.