Standard Ignition RY-90 Headlight Dimmer Switch Relay

Standard Ignition RY-90 Relay Overview

Standard Ignition RY-90 is a 12 V electrical relay with a 10 A amperage rating, 5 blade terminals, and a female connector with a polygon shape. It is built for blower motor function and is listed across a wide range of Nissan and INFINITI applications, including Nissan 240SX, Maxima, Pathfinder, Sentra, and related models.

Use this relay when you need a direct electrical replacement for a vehicle circuit that relies on a 5-terminal blade-style relay. The RY-90 part number is also referenced in multiple OE and aftermarket interchange listings for import applications.

Key Features

• 12 V relay with a 10 A amperage rating
• 5 male blade terminals with a single female connector
• Polygon connector shape for keyed fitment
• Blower motor relay function
• No mounting bracket included
• Cross-reference part number: Gates 19930

Detailed Description

Standard Ignition RY-90 is an electrical relay designed for vehicles that use a 5-blade terminal layout and 12-volt control circuit. The relay is listed for a broad range of Nissan and INFINITI models, including fitments such as 1984-1995 Nissan 300ZX, 1989-1994 Nissan 240SX, 1984-1993 Nissan Maxima, 1986-1997 Nissan Sentra, and 1991-1996 INFINITI G20. It also appears in applications noted for blower motor, ABS relay, door window switch, and automatic transmission spark control relay use depending on the vehicle.

For buyers searching for a Standard Ignition RY-90 relay, Nissan 240SX relay, or Nissan Maxima blower motor relay, this part number is a practical match to verify against the original connector style, terminal count, and OE reference.

Common Problems This Relay May Address

• Blower motor circuit failure
• Intermittent relay operation in the HVAC system
• No-power condition at a switched electrical circuit
• Relay clicking without proper load transfer
• Electrical issues tied to worn 5-terminal blade relay contacts

Installation Notes and Tips

Confirm the original relay’s terminal count, connector shape, and voltage before installation. This relay uses 5 blade terminals and a female connector, so the vehicle socket must match that layout. Review the OE number and application notes for your specific Nissan or INFINITI model, since some listings reference different circuit functions even when the relay style is similar.

Because fitment varies by year and system, compare the existing relay to the RY-90 before replacement. The part is listed for vehicles such as Nissan 200SX, 240SX, Altima, Maxima, Pathfinder, Quest, Sentra, and INFINITI G20.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical components, and the RY-90 is cataloged with OE and interchange references for application matching. Verify the part number RY-90 against the vehicle’s original relay specification to ensure correct installation and circuit function.