OBD2 USB Power Cable with Selectable Always-On or Ignition-Based Output

Why This Product Exists

Hard-wiring dashcams or accessories usually requires fuse taps, panel removal, and permanent wiring changes. Many users want a simpler solution that:

• Does not involve cutting or tapping factory wiring

• Is easy to remove or transfer between vehicles

• Allows control over always-on vs ignition-based power

This OBD2 to USB power adapter solves that problem by using the vehicle’s diagnostic port as a power source, combined with a physical mode selector.

Where It Is Used

The adapter plugs directly into the OBD2 diagnostic port, typically located below the dashboard. The USB-A female port is then used to power:

• Dashcams

• Ambient light controllers

• USB accessories

• GPS modules or trackers

Because it uses the OBD port, installation is tool-free and fully reversible.

How the 24H / ACC Switch Works

The built-in switch controls power behaviour:

• Switch ON (24H Mode)

  • USB port receives power continuously

  • Suitable for parking surveillance dashcams or trackers

• Switch OFF (ACC Mode)

  • Power turns off automatically after ignition / ACC is switched off

  • Ideal for daily-use dashcams and accessories

This logic removes the need for complex wiring decisions.

Installation Notes

• Plug the adapter into the OBD2 port

• Connect your device to the USB-A output

• Select desired power mode using the switch

• Route the cable neatly along dashboard trim

No coding, fuse tapping, or electrical modification is required.

Who Should Buy This

This product is ideal for:

• Dashcam users who want a clean power source

• Users who want selectable always-on or ACC power

• People avoiding fuse box wiring

• Temporary or transferable installations

Who Should Not Buy This

This product may not be suitable if:

• You need high-current power output

• Your accessory requires hard-wired trigger signals

• The vehicle’s OBD port is already in use permanently

Variants / Options

• Single OBD2 male to USB-A female power adapter with mode switch

Installation Logic / Behaviour Explanation

The adapter draws low-current power from the OBD port. In ACC mode, internal logic cuts output once ignition power is lost. In 24-hour mode, output remains live regardless of ignition state. Vehicle diagnostics functionality remains unaffected.

Vehicle Compatibility

Supported Vehicles

• Volkswagen, Skoda, Hyundai, Kia, Tata, and other cars with standard OBD2 ports

Compatibility is based on OBD2 port presence, not vehicle model or platform.

Benefits

• No fuse tapping or wire cutting

• Selectable power behaviour

• Plug and play installation

• Fully reversible setup

• Ideal for dashcam powering

FAQs

Will this drain my battery in 24H mode?
If left in 24H mode with a connected device, it will draw power continuously. ACC mode is recommended for daily driving.

Does this affect OBD diagnostics?
No. The adapter does not interfere with diagnostic communication.

Can I use this for ambient lighting controllers?
Yes, as long as the accessory is USB powered and low current.

Is coding required?
No. The adapter works independently of vehicle software.