Soft Dash to Discovery 2 Climate Control

Regal Rover Classics

Soft Dash to Discovery 2 Climate Control

Patch harness installation guide for fitting the Discovery 2 automatic climate control system to a 1994–1995 Range Rover Classic Soft Dash.

Important: Before installing the supplied patch harnesses, remove the complete original Range Rover Classic Soft Dash HVAC assembly, including the original blower motor, and install the Discovery 2 HVAC assembly.

Before You Begin

Once the Discovery 2 HVAC assembly has been installed, complete the following steps to connect it to the original Range Rover Classic wiring harness.

The original Soft Dash connectors used throughout this guide remain attached to the vehicle wiring harness after the original HVAC assembly has been removed.

No cutting or modification of the original vehicle wiring is required. Each supplied patch harness plugs directly into the existing factory connectors.

1Install the Blower Relay Patch Harness

Locate the original fan speed switch connector C2022 on the vehicle wiring harness.

Plug in the supplied Blower Relay Patch Harness.

This patch harness enables the original blower relay and provides the correct blower earth circuit required by the Discovery 2 HVAC system while retaining the original factory fuse protection.

Insert image showing the Blower Relay Patch Harness installed
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2Install the Blower Power Patch Harness

Locate the original Range Rover Classic blower motor connector.

Plug the supplied Blower Power Patch Harness into the factory blower motor connector.

Connect the opposite end to the blower power input on the side of the Discovery 2 HVAC assembly.

This provides the Discovery 2 HVAC assembly with the original high-current, ignition-switched blower power supply while retaining the factory fused circuit.

Insert image showing the original blower motor connector
Insert image showing the blower power input on the Discovery 2 HVAC assembly
Insert image showing the completed Blower Power Patch Harness connection
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3Install the HVAC Control Power Patch Harness

Locate the original Soft Dash HVAC control connector on the vehicle wiring harness.

Plug in the supplied HVAC Control Power Patch Harness.

This patch harness provides the Discovery 2 HVAC control system with:

  • Ignition-switched power
  • Chassis ground

Power and ground are supplied through the original vehicle wiring while retaining the factory fuse protection.

Insert image showing the original HVAC control connector
Insert image showing the HVAC Control Power Patch Harness installed
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4Install the A/C Request Patch Harness

Locate the original Soft Dash HVAC control connector on the vehicle wiring harness.

Plug in the supplied A/C Request Patch Harness.

Connect the opposite end to Connector C0793, Pin 11 on the Discovery 2 HVAC control unit.

This allows the Discovery 2 climate control system to request air conditioning through the original Range Rover Classic A/C system.

Insert image showing the original Soft Dash HVAC connector
Insert image showing Discovery 2 connector C0793 and Pin 11
Insert image showing the completed A/C Request Patch Harness connection
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5Final Checks

  • Blower Relay Patch Harness connected to C2022
  • Blower Power Patch Harness connected at both ends
  • HVAC Control Power Patch Harness connected
  • A/C Request Patch Harness connected to C0793, Pin 11
  • All connectors fully seated and locked
  • All wiring secured clear of sharp edges and moving components
  • No exposed terminals or conductors

Once all connections have been checked, reconnect the vehicle battery and test the blower operation, climate control functions and A/C request.

The original vehicle wiring remains unmodified, all factory fuse protection is retained and the conversion is completely reversible by removing the supplied patch harnesses.
Insert image showing the completed Discovery 2 HVAC installation
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Support

For installation assistance or replacement components, contact Regal Rover Classics.

Email: info@regalroverclassics.com
Website: regalroverclassics.com

Regal Rover Classics · Soft Dash to Discovery 2 Climate Control Installation Guide