Standard Ignition DS-1579 Door Jamb Switch - Front Left, Left or Rear Left

OE Door Jamb Switch Replacement

Standard Ignition DS-1579 is a direct-fit door jamb switch for vehicles that need a reliable door-ajar or warning-light signal. Built with a female rectangular connector, male blade terminals, and a flange mount, it supports clean replacement on select Ford, Mercury, and Mazda applications.

Use DS-1579 when you need an OE-style door jamb switch for front left or rear left locations on Ford F-150, Mustang, Ranger, Taurus, Excursion, F-250 Super Duty, F-350 Super Duty, Windstar, Mercury Sable, and Mazda B-Series trucks.

Key Features

• Direct-fit OE replacement for easier installation
• Door jamb switch function for door-ajar and warning-light circuits
• Female 1-way rectangular connector
• 2 male blade terminals
• Flange-mounted design
• Brown and silver finish with aluminum and plastic construction

Detailed Description

Standard Ignition DS-1579 is engineered as a replacement door jamb switch for body electrical systems that monitor door position. It is used on select 1998-2004 Ford and Mercury vehicles, plus 2001-2001 Mazda B2300 and 1999-2001 Mazda B2500, B3000, and B4000 models with power door locks. This part number, DS-1579, is a practical choice when the original switch no longer reports an open door correctly or the warning light stays on.

This part cross-references Standard Ignition DS-1579 applications with common interchange numbers such as F8DZ10B987AB and SW3688 for the same application.

What It Helps Fix

• Door ajar or warning light staying illuminated
• No door-open signal at the dash or courtesy circuit
• Intermittent interior light operation tied to the door switch
• Faulty door position input from a worn jamb switch
• Electrical contact issues at the front left or rear left door opening

Installation Notes

• Verify the connector shape, terminal style, and mounting location before installation.
• Match the vehicle position exactly: front left, rear left, or left, as listed in the fitment data.
• Confirm application notes such as warning light, door ajar, power door locks, or the 12/02 cutoff on 2003 Ford Ranger.
• Inspect the door striker area and wiring connector for wear or corrosion before replacing the switch.

Quality Assurance

Standard Ignition states that this door jamb switch uses quality materials for demanding conditions and is tested for reliability during manufacturing. DS-1579 is produced under controlled aftermarket quality processes to support consistent fit and function.