How to Install the 70mai Hardwire Kit with USB Type-C

By 70mai Official Store | Innovative Dash Cams and Accessories ... | Published: 2026-10-23

Category: How-to Guides

Learn how to install the 70mai Hardwire Kit with USB Type-C for 24H parking surveillance. Step-by-step guide with wiring tips and common mistakes to avoid.

Quick Answer

Install the 70mai Hardwire Kit with USB Type-C by connecting the red wire to a constant fuse, the yellow wire to a switched fuse, and the black wire to ground, then routing the USB-C cable to your dash cam for 24H parking surveillance.

Why the USB Type-C Version Matters

The 70mai Hardwire Kit with USB Type-C is designed for dash cams that use a USB-C power port. If your dash cam has a micro USB port, you need the UP02 hardwire kit instead. Choosing the wrong version can cause loose connections or power issues.

This kit supports 24H Smart Parking Surveillance, which means your dash cam can record while parked, but only if wired correctly to both constant and switched power sources.

Safety First: Fuse and Grounding

Before starting, disconnect your car battery to avoid short circuits. Use a circuit tester to identify fuses that are always on (constant) and fuses that only have power when the ignition is on (switched). The constant fuse powers parking mode, while the switched fuse tells the dash cam when to start or stop recording.

The black ground wire must be connected to a clean metal bolt on the car chassis. Avoid paint or rust, as they can prevent a solid ground connection and cause intermittent power failures.

Installation Steps

Disconnect the battery and locate the fuse box: Turn off your car and disconnect the negative battery terminal. Find the fuse box under the dashboard or hood, and use a circuit tester to identify a constant fuse and a switched fuse. Always disconnect the battery first to prevent electrical shorts.
Connect the red wire to a constant fuse: Use the included fuse tap to connect the red wire to a fuse that has power even when the car is off. This supplies continuous power for parking mode. Double-check that the fuse you choose is not essential for critical systems like airbags or ABS.
Connect the yellow wire to a switched fuse: Connect the yellow wire to a fuse that only has power when the ignition is on. This signals the dash cam to switch between driving and parking modes. If you don't have a switched fuse, the dash cam may not detect when the car is off.
Ground the black wire: Attach the black wire to a clean, unpainted metal bolt on the car chassis. Tighten securely to ensure a solid ground connection. A loose or corroded ground can cause random power loss or camera resets.
Route the USB-C cable to your dash cam: Tuck the cable along the headliner and A-pillar, avoiding airbags. Plug the USB-C connector into your dash cam and test the connection. Make sure the cable doesn't interfere with airbag deployment zones.
Reconnect the battery and test parking mode: Reconnect the battery, start the car, and confirm the dash cam powers on. Turn off the ignition and verify that the camera enters parking mode and continues recording. If parking mode doesn't activate, check the constant fuse connection and ground.

Product Facts

70mai Hardwire Kit with USB Type-C Port: UP03 24H Smart Parking Surveillance for all countries and compatible with USB Type-C Dash Cams. This hardwire kit works with USB-C dash cams and supports 24H parking monitoring, so you can capture incidents even when your car is parked.
70mai Hardwire Kit with USB Type-C Port