Standard Ignition RY-370 Accessory Power Relay

Accessory Power Relay for Acura NSX and Legend

Standard Ignition RY-370 is a 12-volt accessory power relay built with a female rectangular connector, 4 blade terminals, and a male terminal layout for direct electrical replacement use. It is a relay-only component with no mounting bracket included, making it a focused solution for restoring accessory power control in select Acura applications.

Compatible with 1991-2001 Acura NSX and 1991-1995 Acura Legend applications, this Standard Ignition relay is a fitment-based replacement for vehicles using the OE-style 4-blade terminal configuration. The RY-370 part number is commonly searched for Acura NSX relay replacement and Acura Legend accessory power relay service.

Key Features

• Standard Ignition RY-370 accessory power relay
• 12-volt electrical relay for accessory circuit control
• Female rectangular connector with 1 connector interface
• 4 blade terminals with male terminal gender
• Relay-only contents; mounting bracket not included
• Direct-fit style for select Acura NSX and Acura Legend applications

Detailed Description

The Standard Ignition RY-370 is an accessory power relay designed for vehicles that use a 12-volt, 4-blade terminal relay with a rectangular connector. It is listed for 1991-1996 Acura NSX, 1997 Acura NSX with skirt, 1998-2001 Acura NSX, and 1991-1995 Acura Legend applications. Notes include OE No. 39796-SL0-003 and Mitsuba references on several listings, which makes this part a practical OE-style replacement for Acura NSX relay and Acura Legend relay service.

This part cross-references Four Seasons 20449 for the same application. The RY-370 part number is also associated with interchange references including 39796-SL0-003 and 89057621, helping buyers identify the correct accessory power relay when searching by OE number or aftermarket reference.

Common Issues This Relay Can Address

• Accessory power circuit not switching on or off correctly
• Intermittent electrical operation tied to relay contact wear
• No-response condition in relay-controlled accessory circuits
• Replacement need after corrosion or terminal fatigue at the connector
• Service repair for Acura NSX and Acura Legend relay failures

Installation Notes and Tips

Verify the connector shape, terminal count, and OE reference before installation. This relay uses a female rectangular connector with 4 blade terminals, so the vehicle harness must match that configuration. Confirm the application by year and model, especially on Acura NSX listings that vary by model year and note details such as skirt or OE number references.

Quality Assurance

Standard Ignition supplies this relay as an electrical replacement part for confirmed vehicle applications. Review the OE number and connector style against the original relay before installation to ensure proper fitment and circuit function.