Standard Ignition DS-125 Trunk Open Warning Switch - Front Left, Front Right or Rear

Trunk Open Warning Switch for Classic Ford and Mercury

Standard Ignition DS-125 is a trunk open warning switch built for direct replacement service on select Ford, Lincoln, and Mercury vehicles. It uses a 2-terminal female connection layout with no connector and is designed for applications that require reliable switch operation and consistent electrical contact.

Key Features

• Direct-mount trunk open warning switch
• No connector; 2 female terminals
• Copper alloy conductors for strong electrical conductivity and low resistive loss
• 100% tested for mechanical and electrical switching performance
• Built with robust materials for service replacement use

Detailed Description

The Standard Ignition DS-125 is a trunk open warning switch for classic vehicle electrical repair, including 1965-1967 Ford LTD, 1965-1967 Ford Mustang, 1965 and 1967 Ford Thunderbird, 1958-1967 Lincoln Continental, and select Mercury applications such as 1967 Cougar and 1967 Marquis. This DS-125 switch is engineered with copper alloy conductors to maintain dependable electrical flow, while the direct mounting design supports straightforward replacement in the original location. Standard Ignition DS-125 is a practical choice when restoring trunk warning circuit function on Ford Mustang, Ford Thunderbird, and Lincoln Continental models.

This part cross-references 1S4397 and SW608 for the same application.

Common Problems It Can Solve

• Trunk warning light or circuit not responding when the trunk is opened
• Intermittent switch contact caused by worn internal components
• Electrical resistance from aged or corroded switch conductors
• Improper trunk-open signal on restoration or repair projects
• Fitment issues when replacing an original direct-mount warning switch

Installation Notes and Tips

Verify the mounting style and terminal layout before installation. This DS-125 uses a direct mount design with no connector and two female terminals, so the vehicle harness must match the original switch configuration. Confirm the application details for your Ford LTD, Mustang, Thunderbird, Lincoln Continental, or Mercury model, including any 7/8 inch mounting hole notes where listed.

Quality Assurance

Standard Ignition states that this switch is fully tested for both mechanical action and electrical switching performance. The design also reflects the brand’s focus on service-grade replacement parts for technicians and repair professionals.