Standard Ignition RY-1647 Computer Control Relay

Computer Control Relay for Jaguar and Land Rover

Standard Ignition RY-1647 is a 12-volt computer control relay built for multi-function electrical switching in select Jaguar and Land Rover applications. With a 40 amp rating, square connector shape, and 4 blade terminals, it supports reliable relay operation in systems that depend on consistent current control.

Key Features

• Computer control relay with multi-function operation
• 12-volt electrical system application
• 40 amp amperage rating
• Square connector shape for proper fitment
• 4 male blade terminals
• Relay contents only

Application Details

This Standard Ignition RY-1647 relay is used in select Jaguar S-Type, Jaguar X-Type, Land Rover Freelander, and Land Rover Range Rover applications, along with additional Jaguar models including XJ6, XJ12, XJR, XJS, XJRS, and Vanden Plas. It is also cross-referenced to Four Seasons 20966 for the same application. Standard Ignition RY-1647 is a direct-fit electrical relay option for vehicles that require a 12V, 40A multi-function relay with a square 4-terminal blade design.

What It Helps Solve

• Intermittent relay switching in body or computer-controlled circuits
• No-start or accessory operation issues caused by relay failure
• Electrical functions that stop working due to worn relay contacts
• Heat-related relay performance loss in higher-load circuits
• Faulty current transfer in 12-volt control systems

Installation Notes and Tips

Verify the connector shape, terminal count, terminal gender, and amperage rating before installation. Match the relay to the vehicle’s original electrical layout and confirm the application by year, make, and model. This part is commonly used in 2000-2007 Jaguar S-Type, 2002-2007 Jaguar X-Type, 2002-2005 Land Rover Freelander, and 1995-2002 Land Rover Range Rover applications, as well as select Jaguar XJ6, XJ12, XJR, XJS, XJRS, and Vanden Plas models.

Quality Assurance

Standard Ignition supplies electrical components for service replacement use, and RY-1647 is built to meet the specified relay configuration for the listed applications. Confirm all electrical specifications against the original part before installation.