Standard Ignition DS-174 Door Jamb Switch - Front, Front Left, Front Right or Rear

Door Jamb Switch for Classic Ford and Lincoln

The Standard Ignition DS-174 door jamb switch is built for direct mounting in the door opening and is designed for reliable interior light and door-activated electrical switching. With a white plastic finish, male connector gender, female terminals, and 3 terminals, it is a practical replacement for select Ford, Lincoln, and Mercury applications from 1968-1979.

For restorations and repairs on vehicles such as the Ford Thunderbird, Lincoln Continental, and Mercury Cougar, the DS-174 provides the switching performance needed for door-triggered circuits. Standard Ignition DS-174 is engineered with copper alloy conductors to support strong electrical conductivity and low resistive loss.

Key Features

• Door jamb switch for door-mounted electrical control
• Direct mounting design for select classic vehicle applications
• White plastic finish
• Male connector gender with female terminals
• 3-terminal configuration
• Built with copper alloy conductors for efficient current flow
• 100% tested for mechanical and electrical switching performance

Detailed Description

Standard Ignition DS-174 is a replacement door jamb switch for select Ford, Lincoln, and Mercury models, including Ford Thunderbird, Lincoln Continental, Mercury Cougar, Ford LTD, Mercury Marquis, Mercury Grand Marquis, Mercury Montego, Ford Mustang, and Lincoln Versailles applications listed in the fitment data. This part number is intended for vehicles that use a direct-mounted door switch with the specified connector and terminal layout. The DS-174 cross-references Standard Ignition DS-174 and Monroe Shocks & Struts (e.g., 172286) for the same application.

Standard Ignition builds this switch with durable materials and copper alloy conductors to maintain consistent electrical contact. Each unit is tested to verify both the mechanical action of the switch and the electrical switching function, which is important for door-activated interior lighting and related body electrical circuits.

What This Part Helps Fix

• Interior lights that do not turn on when the door opens
• Door-activated circuits that stay on or fail to switch properly
• Intermittent electrical contact at the door jamb switch
• Worn or damaged original door switch assemblies
• Restoration needs on classic Ford, Lincoln, and Mercury body electrical systems

Installation Notes and Tips

• Verify the vehicle uses a direct-mounted door jamb switch with a 3-terminal layout before installation.
• Confirm connector gender and terminal style match the original part.
• Check the mounting location at the door opening and compare the original switch dimensions and hole style.
• Some listed applications include notes for auto seat back latch, tilt steering wheel, or 7/8 inch mounting hole; match those details to the vehicle before ordering.
• For best results, inspect the door striker area and wiring connector for wear or corrosion during replacement.

Quality Assurance

Standard Ignition backs this switch with a design focused on service-professional durability, electrical conductivity, and verified switching performance. The DS-174 is 100% tested before release to help ensure consistent operation in the intended application.