Standard Ignition RY-939 Horn Relay

Horn Relay for Land Rover Discovery

Standard Ignition RY-939 is a 12-volt horn relay built with a rectangular connector, male blade terminals, and a 5-terminal layout. It is a direct-fit electrical relay solution for select Land Rover Discovery models and supports reliable horn circuit switching in daily driving and repair work.

• 12-volt horn relay for automotive electrical systems
• Rectangular connector shape for OE-style fitment
• Male blade terminals with 5-terminal configuration
• Relay function for horn circuit control
• Black finish noted in fitment data for select applications

Fitment and Application Details

Compatible with 1994-2004 Land Rover Discovery horn relay applications. Fits 1994-2004 Land Rover Discovery, N/A. Standard Ignition RY-939 is also referenced for Land Rover Discovery electrical repair searches where a 12V horn relay with a rectangular connector and 5 terminals is required.

This part cross-references Four Seasons 20963 for the same application.

What This Relay Helps Address

• Horn inoperative due to relay failure
• Intermittent horn operation from worn relay contacts
• Electrical switching issues in the horn circuit
• Replacement needs for a damaged 5-terminal relay
• Service work on Land Rover Discovery horn electrical systems

Installation Notes and Tips

Verify the connector shape, terminal count, and terminal type against the original relay before installation. Confirm 12-volt system requirements and match the relay location in the vehicle’s electrical layout. Because fitment is specific to the listed Land Rover Discovery applications, compare the existing relay and connector before replacement.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical components, and RY-939 is built to match the listed relay specifications for the intended application. Use the part number RY-939 when confirming replacement needs for Land Rover Discovery horn relay service.