Keep your dome light and door-ajar warning circuits switching properly with the Standard Ignition Door Jamb Switch DS-174. It drops in as a direct-fit replacement across a long run of classic Ford, Lincoln, and Mercury models, including the 1968-1979 Ford Thunderbird, 1970-1978 Ford LTD, 1970-1976 Ford Torino, 1970-1979 Lincoln Continental, 1968-1979 Mercury Cougar, and 1970-1978 Mercury Marquis — see the "Vehicles it fits" section for the full list and engine details.
- Copper alloy conductors: carry current with low resistive losses for solid electrical conductivity.
- 100% tested: every switch is verified for both mechanical and electrical switching performance.
- Robust build: a robust design and high-grade materials meet the demands of today's service professional.
- OE pedigree: produced by a global manufacturer of ignition products with quality control from componentry to finished part.
Mounted in the door jamb, the switch senses whether the door is open or closed and signals the interior courtesy/dome lighting and door-open warning circuits accordingly. This unit is cataloged for front and rear door positions, including front-right and front-left applications. If a worn or corroded jamb switch is the reason your dome light stays on, won't come on, or your door-ajar warning acts up, this replaces it.
Interchange: S374 · SW110 · DJ6084 · D0AZ13713D · D0OZ13713A · D0VY13713A · D1AB13713B · D1AZ13713A · D1AZ13713D · D1AZ13713E · D2AB13713AA · D2AB13A764BA · D2VB13A764AA · D7OB13713AA · D7OB13713CA · D7OZ13713A · DOZZ13713A · SW1055 · 12323013 · 12323027
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the Door Jamb Switch DS-174 do?
Mounted in the door jamb, it senses whether the door is open or closed and signals the interior dome/courtesy lights and the door-open warning circuits.
What are signs my door jamb switch may need replacing?
Common signs include a dome light that stays on or won't come on, or a door-ajar warning that misbehaves. Diagnose the cause first, since wiring or bulbs can also be at fault.
Which vehicles does the DS-174 fit?
It fits many 1968-1979 Ford, Lincoln, and Mercury models, such as the Ford Thunderbird, LTD, Torino, Lincoln Continental, and Mercury Cougar. See the "Vehicles it fits" section for the full list.
Where does this switch mount and which positions does it cover?
It installs in the door jamb/pillar and is cataloged for front and rear door positions, including front-right and front-left applications.
What part numbers does the DS-174 interchange with?
It replaces S374, SW110, DJ6084, SW1055, 12323013, 12323027, and numerous Ford D-series numbers such as D0AZ13713D and D1AZ13713A — see the full interchange list.
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