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Standard Ignition RY-938 Computer Control Relay
| Brand | Standard Ignition RY-938 |
|---|---|
| Amperage Rating | 30 A |
| Connector Shape | Square |
| Contents | Relay |
| Continuous Duty | No |
| Functions | Main Relay |
| Mounting Bracket(s) Included | No |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Voltage | 12 |
| Fits | Jaguar and Land Rover · 33 vehicles |
Main relay. Controls primary electrical power with a 5-blade terminal layout.
Composite housing. Helps protect the relay from harsh temperatures and underhood conditions.
Quality contacts. Brass or copper contacts where specified help extend wear.
Cross-references Quality-Built 16027, Wix 33393 and 1R2373 for the same application. See all 8.
Computer Control Relay for Select Jaguar and Land Rover Vehicles
Standard Ignition RY-938 is a 12-volt computer control relay built for main relay applications in select Jaguar and Land Rover models. It uses a square connector shape, 5 male blade terminals, and a 30 amp amperage rating to support electrical switching in demanding under-hood environments.
Fits 2002-2007 Jaguar X-Type, N/A. Fits 2003-2007 Land Rover Range Rover, N/A. Fits 1991-1994 Land Rover Range Rover, N/A. Fits 1987-1989 Land Rover Range Rover, N/A. Fits 2006 Land Rover Range Rover Sport, N/A. Fits 1994-1995 Land Rover Defender 90, N/A. Fits 1985-1993 Jaguar XJS, N/A. Fits 1993 Land Rover Defender 110, N/A. Fits 1990 Land Rover Range Rover, N/A, steering column wiring harness connector for auxiliary use.
Key Features
- Part number: RY-938
- Function: main relay
- 12-volt electrical relay
- 30 A amperage rating
- Square connector shape
- 5-terminal male blade design
- Continuous duty: no
- Built with composite housing for heat and under-hood exposure
- Brass or copper contacts used where specified for wear resistance
Detailed Description
Standard Ignition RY-938 is a computer control relay engineered for reliable electrical switching in vehicle systems that depend on a main relay circuit. The relay’s composite housing helps protect internal components from high temperatures and severe under-hood conditions, while brass or copper contacts are used where specified to support extended service life. This relay is manufactured to strict quality requirements in TS16949 and ISO9001 certified facilities. For buyers searching for a Jaguar X-Type relay, Land Rover Range Rover main relay, or Land Rover Defender 90 electrical relay, RY-938 provides a direct replacement option for the listed applications. This part cross-references Wix 33393 for the same application.
Common Issues It Can Help Resolve
- No-start condition caused by a failed main relay
- Intermittent power delivery to engine control circuits
- Electrical accessories or control modules losing relay-triggered power
- Heat-related relay failure in under-hood locations
- Worn relay contacts causing inconsistent switching
Installation Notes and Tips
Verify the connector shape, terminal count, and terminal type before installation. Match the 12-volt system requirement and confirm the relay is being used in a main relay application. Inspect the vehicle connector and surrounding wiring for heat damage, corrosion, or loose terminals before installing the new relay. On the 1990 Land Rover Range Rover application, note the steering column wiring harness connector for auxiliary use.
Quality Assurance
Standard Ignition manufactures this relay to stringent quality standards in TS16949 and ISO9001 certified plants. The housing and contact materials are selected to support dependable operation in demanding automotive electrical systems.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Jaguar | X-Type | — | — | N/A | — |
| 2007 | Land Rover | Range Rover | — | — | N/A | — |
| 2006 | Jaguar | X-Type | — | — | N/A | — |
| 2006 | Land Rover | Range Rover | — | — | N/A | — |
| 2006 | Land Rover | Range Rover | 4.4L | V8 | N/A | — |
| 2006 | Land Rover | Range Rover Sport | 4.4L | V8 | N/A | — |
| 2005 | Jaguar | X-Type | — | — | N/A | — |
| 2005 | Land Rover | Range Rover | — | — | N/A | — |
| 2004 | Jaguar | X-Type | — | — | N/A | — |
| 2004 | Land Rover | Range Rover | — | — | N/A | — |
| 2003 | Jaguar | X-Type | — | — | N/A | — |
| 2003 | Land Rover | Range Rover | — | — | N/A | — |
| 2002 | Jaguar | X-Type | — | — | N/A | — |
| 1995 | Land Rover | Defender 90 | 3.9L | V8 | N/A | — |
| 1994 | Land Rover | Defender 90 | 3.9L | V8 | N/A | — |
| 1994 | Land Rover | Range Rover | — | — | N/A | — |
| 1993 | Jaguar | XJS | — | — | N/A | — |
| 1993 | Land Rover | Defender 110 | 3.9L | V8 | N/A | — |
| 1993 | Land Rover | Range Rover | — | — | N/A | — |
| 1992 | Jaguar | XJS | — | — | N/A | — |
| 1992 | Land Rover | Range Rover | — | — | N/A | — |
| 1991 | Jaguar | XJS | — | — | N/A | — |
| 1991 | Land Rover | Range Rover | — | — | N/A | — |
| 1990 | Jaguar | XJS | — | — | N/A | — |
| 1990 | Land Rover | Range Rover | — | — | N/A | Steering column wiring harness connector for auxiliary use. |
| 1989 | Jaguar | XJS | — | — | N/A | — |
| 1989 | Land Rover | Range Rover | — | — | N/A | — |
| 1988 | Jaguar | XJS | — | — | N/A | — |
| 1988 | Land Rover | Range Rover | — | — | N/A | — |
| 1987 | Jaguar | XJS | — | — | N/A | — |
| 1987 | Land Rover | Range Rover | — | — | N/A | — |
| 1986 | Jaguar | XJS | — | — | N/A | — |
| 1985 | Jaguar | XJS | — | — | N/A | — |
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