mangoal Dash Cam Power Adapter for Mercedes 3‑Pin Rain

mangoal's Dash Cam Power Adapter plugs directly into Mercedes-Benz vehicles that have the 3‑pin rain sensor port, delivering hidden, plug‑and‑play 5V/2A power for dash cameras and mirror cameras without splicing wires.

This compact adapter was engineered specifically for Mercedes‑Benz models that include the factory 3‑pin rain sensor connector behind the rearview mirror. Instead of tapping the fuse box or running visible USB cords, the kit uses the OEM rain sensor socket to provide a clean, factory‑like power feed for windshield cameras. The cable bundle includes Mini USB, USB‑C and Micro USB outputs, and the module energizes only when the ignition is on, so it won’t support continual parking mode.

How do I confirm my Mercedes has the compatible 3‑pin rain sensor port?

Check behind the rearview mirror assembly for a small plastic 3‑pin socket used by the rain/lighting sensor. You may need to remove or shift the mirror cover to see it; it’s not the same as larger fuse or harness connectors.

• Look directly behind the mirror for a compact three‑pin plastic plug.
• If unsure, gently remove the mirror trim or consult the vehicle manual.
• Contact Mangoal Support with a photo of the mirror area for compatibility help.

Will this power adapter run my dash cam’s parking mode?

This adapter supplies switched 5V power tied to the ignition, so it does not provide constant power for parking monitoring. It is intended to power cameras only while the vehicle is running.

• Output: 5 volts at up to 2 amps per included cable.
• Power activation follows the car’s ignition state (on/off).
• Not suitable for cameras that require 24/7 power without a separate hardwire solution.

Which dash cam connectors are included and what should I check before buying?

The kit includes three interchangeable output leads—Mini USB, USB‑C and Micro USB—covering most portable dash cams and mirror cameras. It does not support barrel‑type adapters or RJ11 connectors, so confirm your camera’s power jack beforehand.

• Included cables: Mini USB, Type‑C, Micro USB (all 5V/2A rated).
• Not compatible with barrel jack or RJ11 style power plugs.
• Verify your device requires 5V and draws less than 2A to prevent issues.

Is the installation difficult and will it look factory‑installed?

Installation is designed to be simple and non‑invasive for compatible vehicles—plug the adapter into the 3‑pin rain sensor socket and route the output cable along the headliner or A‑pillar. Because it uses the OEM connector, the result is neat and concealed without cutting wires.

• Plug‑and‑play connection to the 3‑pin rain sensor port—no splicing required.
• Route cables behind trim for a clean, factory appearance.
• Mangoal Support is available if you need guidance or verification.

Who is this adapter for? If you own a Mercedes‑Benz with a visible 3‑pin rain sensor socket and want a tidy, OEM‑style power feed for a windshield dash cam or mirror camera, this Mangoal kit is a compact, simple option. It’s ideal for users who prefer no‑cut installations and who only need power while driving. If your camera needs constant parking power or uses a barrel/RJ11 connector, consider a dedicated hardwire kit or a compatible adapter instead.