Why This Horn Adapter Harness Exists

MG cars such as the MG Hector use factory horn connectors that are different from the standard spade terminals found on popular aftermarket horns like Hella Chrome Trumpet. Directly cutting or splicing wires to install these horns can lead to electrical issues, poor connections, or warranty concerns.

This TecUpdater horn adapter harness solves that problem by providing a connector-to-connector solution, allowing standard horns to be installed cleanly and safely on MG vehicles.

Where This Harness Is Used

The harness connects:

• One end to the factory MG horn connector

• The other end to standard horn terminals used by aftermarket horns

It sits between the vehicle wiring and the horn, acting as a converter without altering factory cables.

Supported Horn Types

This harness is suitable for installing:

• Hella Chrome Trumpet horns

• Other standard aftermarket electric horns

• Dual-terminal horn designs

It is not intended for air horns or compressor-based systems.

Plug & Play Installation Logic

Installation is straightforward:

• Disconnect the factory horn connector

• Plug the adapter harness into the MG vehicle connector

• Connect the standard horn terminals to the horn

• Secure the harness and test operation

No wire cutting, splicing, or relay modification is required for standard horn installations.

Installation Notes

• Designed for electric horns with standard terminals

• Retains factory relay and horn logic

• Professional installation recommended if adding dual horns

Who Should Buy This

This product is ideal for:

• MG Hector owners installing Hella Chrome Trumpet horns

• MG car owners upgrading factory horns

• Users wanting a clean, reversible horn installation

• Installations that avoid wire cutting

Who Should Not Buy This

This product is not suitable if:

• You are installing air horns or compressor systems

• Your horn requires an external relay upgrade

• Your vehicle is not an MG model

Variants / Options

• Horn Adapter Harness – Single vehicle side connector

Vehicle Compatibility

MG

• MG Hector

• Other MG cars using similar factory horn connectors

Compatibility is based on connector type, not horn brand.

Benefits

• Enables horn upgrades on MG cars

• No wire cutting or splicing

• Maintains factory wiring integrity

• Compatible with popular standard horns

• Clean, reversible installation

FAQs

Can I install Hella Chrome Trumpet horns using this harness?
Yes. This harness is designed specifically to connect standard horns like Hella Chrome Trumpet to MG cars.

Does this work with air horns?
No. Air horns require relay and compressor wiring and are not supported by this harness.

Is relay upgrade required?
No for standard electric horns. Factory relay is retained.

Does this affect vehicle warranty?
No. The harness avoids cutting factory wiring.