For dash cam users seeking to enable parking mode without the complexities of hardwiring, the Dash Cam Obd2 Adapter presents a convenient alternative. Traditional hardwiring kits often require tapping into your car’s fuse box, a process that can be daunting for some and potentially void vehicle warranties. The OBD2 adapter offers a plug-and-play solution, drawing power directly from your vehicle’s OBD-II port. But how does this adapter work, and is it the right choice for your dash cam parking mode needs?
One example of such a device is the IROAD OBD-II power adapter. Instead of relying on direct wiring to the car battery and ACC (accessory) circuits, it utilizes the OBD-II port, which is standard in most vehicles manufactured from 1996 onwards. This adapter typically draws power from pin 16 (battery power) and pin 4 (ground) of the OBD-II port. A key feature of the IROAD adapter, and similar OBD2 adapters, is its intelligent power management for parking mode.
Alt text: Diagram illustrating OBD-II connector pin layout, highlighting pin 4 for ground and pin 16 for battery power, relevant for dash cam OBD2 adapter connection.
The IROAD OBD-II power adapter employs a motion-based and voltage-sensing strategy to manage parking mode. It has a mode switch with ‘S’ for Parking Mode Off and ‘P’ for Parking Mode On. When set to ‘P’ (Parking Mode On), the adapter monitors vehicle activity and voltage levels to activate parking mode.
Here’s a breakdown of the observed behavior of the IROAD OBD-II power adapter:
Parking Mode Conditions:
- Entering Parking Mode: The adapter detects when the vehicle has been stationary for 5 minutes and the vehicle system voltage (measured at pin 16) drops below 13.5 volts. Upon meeting these conditions, the accessory power to the dash cam is turned off.
- Exiting Parking Mode: Parking mode deactivates when the vehicle starts moving and the system voltage is between 11.2 volts and 13.49 volts. Alternatively, if the vehicle remains stationary but the system voltage rises to 13.5 volts or higher, parking mode also deactivates. In both exit scenarios, accessory power is restored to the dash cam.
Low Voltage Cutoff:
- The IROAD adapter also incorporates a low voltage cutoff feature. If the vehicle system voltage drops below 11.2 volts for at least 2 minutes while in parking mode, the constant power supply is cut off to prevent excessive battery drain. When the voltage rises back above 11.2 volts, constant power is restored, although accessory power remains off until parking mode exit conditions are met.
Compatibility:
The compatibility of a dash cam OBD2 adapter largely depends on your vehicle. If your car has a standard OBD-II port (common in vehicles from 1996 onwards) with power at pin 16 and ground at pin 4, it is likely to be compatible. For older vehicles, compatibility may vary, and it’s essential to check the OBD port configuration.
In conclusion, a dash cam OBD2 adapter, like the IROAD model, offers a user-friendly way to power your dash cam’s parking mode. It simplifies installation and provides intelligent power management based on vehicle motion and voltage, making it a viable option for many dash cam users seeking parking surveillance without the complexities of traditional hardwiring.
