Standard Ignition RY-966 Windshield Wiper Motor Relay

Wiper Motor Relay for Ford and Lincoln

Standard Ignition RY-966 is a 12-volt wiper motor relay built for vehicles that rely on a rectangular, 4-terminal blade-style relay layout. It is a direct-fit electrical replacement for a wide range of Ford, Lincoln, Mercury, and Mazda applications, including Ford F-150, F-250 Super Duty, Explorer, Edge, and Mustang models.

• 40 amp amperage rating for wiper circuit control
• 12-volt relay with rectangular connector shape
• 4 male blade terminals
• Multi-function relay design
• Composite housing for underhood temperature resistance
• Brass or copper contacts where specified for wear resistance
• Manufactured under TS16949 and ISO9001 quality systems

Detailed Product Overview

The Standard Ignition RY-966 wiper motor relay is engineered for vehicles that need a rectangular relay with four blade terminals and a 40 amp rating. It is used across many Ford and Lincoln platforms, including 2004-2015 Ford F-250 Super Duty, 2004-2013 Ford F-150, 2011-2021 Ford Edge, and 2015-2021 Ford Mustang applications. This part number, RY-966, also cross-references Four Seasons 20976 for the same application.

Built with a composite housing and specified brass or copper contacts, this relay is made to handle demanding underhood conditions while maintaining consistent electrical performance. Standard Ignition manufactures this part under controlled quality processes to help ensure proper fit and function for the listed vehicles.

Common Problems This Relay Can Address

• Intermittent or inoperative windshield wiper operation
• Wipers that stop responding to switch input
• Relay-related electrical faults in the wiper circuit
• Delayed or inconsistent wiper motor activation
• Replacement needs after heat or vibration-related relay wear

Installation Notes and Fitment

Compatible With vehicles that use a 12-volt rectangular relay with 4 male blade terminals. Fits 2018-2021 Ford EcoSport, N/A; Fits 2011-2021 Ford Edge, N/A; Fits 2018-2021 Ford Expedition, N/A; Fits 2015-2021 Ford Mustang, N/A; Fits 2019-2021 Ford Ranger, N/A; Fits 2016-2020 Ford F-250 Super Duty, N/A; Fits 2011-2020 Ford F-350 Super Duty, N/A; Fits 2013-2020 Ford Fusion, N/A; Fits 2019-2020 Ford SSV Plug-In Hybrid, N/A; Fits 2017-2020 Lincoln Continental, N/A; Fits 2019-2020 Lincoln Nautilus, N/A; Fits 2018-2020 Lincoln Navigator, N/A; Fits 2011-2019 Ford Explorer, N/A; Fits 2010-2019 Ford Taurus, N/A; Fits 2011-2018 Lincoln MKX, N/A; Fits 2004-2015 Ford F-250 Super Duty, N/A; Fits 2014 Ford F-150, N/A; Fits 2004-2013 Ford F-150, N/A; Fits 2009-2012 Ford Escape, N/A; Fits 2008-2011 Ford Focus, N/A; Fits 2008-2011 Mazda Tribute, N/A; Fits 2009-2011 Mercury Mariner, N/A; Fits 2010 Ford Transit Connect, N/A; Fits 2004-2009 Ford F-350 Super Duty, N/A; Fits 2006-2008 Ford Escape, N/A; Fits 2006-2008 Lincoln Mark LT, N/A; Fits 2006-2008 Mercury Mariner, N/A; Fits 2004-2006 Ford Ranger, N/A; Fits 2004 Ford F-150 Heritage, N/A.

Verify connector shape, terminal count, and relay style before installation. No mounting bracket is included.

Quality Assurance

Standard Ignition uses composite housings, specified metal contacts, and controlled manufacturing processes to support consistent electrical performance. The brand’s plants are TS16949 and ISO9001 certified, and the part is produced under quality requirements intended to match the correct relay to the correct vehicle application.