70mai Hardwire Kit Manual

Product overview

Please read this manual carefully before using the product and keep it in a safe place.
Note: Illustrations of the product, accessories, and user interface in the user manual are for reference purposes only. The actual product and functions may vary due to product enhancements.

Product functions

As an accessory to 70mai in-car devices, this product must be used with the main device. After correctly installed and connected with the main device, 70mai Hardwire Kit will power and transmit ACC signals to the main device, and provide low-voltage protection to prevent over-discharging of the car battery due to the continuous operation of the main device.

Supported devices

This product is compatible with in-car devices that support parking surveillance and are manufactured under the 70mai brand, as well as Xiaomi and Mijia brands manufactured by 70mai Co., Ltd. Please refer to the online guide or product page for a complete list of supported devices.
This product has a Type-C port and does not support main devices that uses a USB-A connector.

For smart rearview mirrors and other smart in-car products, change the power on/off mode to "ACC detection mode" in power on/off settings after installing and connecting the hardwire kit. Otherwise, the main device may malfunction.

Installation

1. Locate your fuse box
   Refer to the vehicle's user manual and locate the fuse box.
   

Notes:

• Make sure that the car's engine and power has been turned off before locating or operating the fuse box.
• The location and shape of the fuse box may vary among vehicles. The image is for reference only. For specific details, refer to the vehicle's user manual or consult with the automotive dealership.
• If you are unable to locate the fuse box or lack of knowledge in the electrical system, please ask a professional technician to perform the installation to avoid any accidents.

2. Find the suitable fuses
   Refer to the vehicle's user manual or use a multimeter to find the fuses in the following specification.
   
   1. The regular electric fuse with an output voltage of 12-30V.
   2. The ACC power fuse.
      • The regular electric fuse provides constant power when the vehicle's engine turns off.
      • The ACC power fuse only provides power when the key is turned to ACC ON position and stops providing power when the vehicle's engine turns off.

Once identified, remove those two fuses.

3. Connect the power cable and ACC signal cable
   
   1. Wrap the power cable (red) of the hardwire kit around the pin of the removed regular electric fuse.
   2. Wrap the ACC signal cable (yellow) of the hardwire kit around the pin of the removed ACC power fuse.
   3. Insert the fuses back into the slots respectively.
4. Connect the ground wire
   
   1. Connect the ground wire (black) of the hardwire kit to the grounding screw or chassis on the vehicle.
   2. Use tool to fasten the screw.
5. Test the connection and ACC signal
   Smart rearview mirrors and other smart in-car devices:
   1. Connect the Type-C connector of the hardwire kit to the power outlet of the main device (DC/IN). Start the engine and wait for the main device to turn on.
      If the main device fails to power on, turn it on manually. If the message "Connect to an external power source" is shown, check the power cable of the hardwire kit to see if it is correctly connected to the regular electric fuse.
   2. After the main device is turned on, go to Settings > Power on/off settings and select ACC detection mode. Restart the main device for the new settings to take effect.
   3. After the main device has restarted, turn off the engine and remove the key. Check if the main device powers off or enters sleep mode. For some cars, the ACC power off signal will only be triggered when the driver seat door is opened after the engine is turned off. Some car models will only trigger the ACC power off signal after the engine has been turned off for a certain period of time. For such cars, observe for some time after the ACC power is turn off to check if the main device powers off or enters sleep mode.
   4. After the main device powers off or enters sleep mode, restart the engine and check if the main device automatically turns on.

Dash cams:

1. Connect the Type-C connector of the hardwire kit to the power outlet of the main device (DC/IN). Start the engine and wait for the main device to turn on.
   If the main device fails to power on, turn it on manually. If the message "Connect to an external power source" is shown, check the power cable of the hardwire kit to see if it is correctly connected to the regular electric fuse.
2. After the main device has turned on, turn off the engine and remove the key. Check if the main device powers off or enters sleep mode.
   For some cars, the ACC power off signal will only be triggered when the driver seat door is opened after the engine is turned off. Some car models will only trigger the ACC power off signal after the engine has been turned off for a certain period of time. For such cars, observe for some time after the ACC power is turn off to check if the main device powers off or enters sleep mode.
3. After the main device powers off or enters sleep mode, restart the engine and check if the main device automatically turns on.

If the above steps can be proceed correctly, the circuit and ACC signal test is passed.
If the circuit and ACC signal test fails, please check the wiring of the hardwire kit and ensure that the fuse and ground are correctly connected.
If the connection is correct, but the test fails, contact after-sales service for assistance.

6. Test the parking surveillance function
   1. When the main device turns on, enable the parking surveillance function on the device or the 70mai app (when the main device is connected to the app)
   2. Allow the vehicle to run for approximately 1 minute, then turn off the engine and observe if the main device automatically enters parking surveillance mode.

If the main device enters the specific mode, the connection is normal.
If not, ensure that the cable is firmly connected, and then restart the vehicle. Allow it to run for approximately 1 minute again, then turn off the engine and observe if the main device enters parking surveillance mode.

7. Manage the cable
   Route the hardwire kit to the location of the main device.
   If the hardwire kit is too long, tie it up, but do not cut it. Cutting the hardwire kit will affect the power and ACC signal to the main device.
   

Notes:

• The actual installation and wiring path of the hardwire kit may differ from the illustrations in the manual. Please seek assistance from a professional technician.
• Before installation and wiring, please turn off the car engine and power to prevent short circuit.

Specifications

Product: 70mai Hardwire Kit
Model: Midrive UP03
Input: DC 12 ~ 30V
Output: DC 5V 2.4A
Negative car power outlet: GND(-)
Positive car power outlet: VCC(+)
Car power: ACC
Low voltage protection: 11.8V

Packing list

1. 70mai Hardwire Kit × 1
2. User manual × 1

Troubleshooting

1. The product is not powering the main device

   • Make sure the selected regular electric fuse has an output voltage of 12-30V.
   • Make sure that the hardwire kit cables are well connected with the correct fuses.
   • If it still doesn't power the main device, try to identify other usable fuses and connect them, referring to Step 2 in Installation chapter.

2. The main device is constantly rebooing

Make sure that the black cable of the hardwire kit is securely bolted to a good metal ground connection.

3. The main device couldn't enter parking surveillance mode

   • Make sure the parking surveillance function is enabled in the main device or the 70mai app (when the main device is connected to the app).
   • Make sure that the hardwire kit cables are well connected with the correct fuses.

Comparison table of wire connection and dash cam status
Connection method	Dash cam status (parking surveillance function is enabled)
	While driving	While parking
	Normal recording	Entering parking surveillance mode
	Normal recording	Normal recording
	Normal recording	Powering off
	Entering parking surveillance mode	Powering off
	Normal recording	Powering off
	Dash cam will never power on	Dash cam will never power on

Precautions

Before using the device, please read all the precautions to ensure correct and safe use.

• Please ask a professional technician to perform the installation. Our company is not liable for any short-circuiting of the car power supply and damage to car battery or interior due to improper installation.
• Our company is not liable for any losses resulting from the installation of the product unless they are caused by product quality issues.
• The performance of this product is affected by the reliability of the car power source, car battery and main device. Our company is not liable for any losses from the malfunction of this product unless it is caused by product quality issues.
• Some cars cannot detect changes in ACC signals when the engine is turned on or off. For such cars, the 70mai hardwire kit is unable to transmit ACC signals to the main device. This may cause certain functions to be unavailable.
• Please only use this product for legal purposes.

Scan the QR code and email us at help@70mai.com

Scan the QR code to view the installation video.

Service: help@70mai.com
For further information, please go to www.70mai.com
Manufacturer: 70mai Co., Ltd.
Address: Room 2220, Building 2, No. 588 Zixing Road, Minhang District, Shanghai, China

Documents / Resources

References

• 70mai: Innovator in Smart Dash Cams

Download manual

Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.

Download 70mai Hardwire Kit Manual