Keep your dome light switching on and your door-ajar warning working with the Standard Ignition Door Jamb Switch (DS-850), also written DS850. This door ajar warning switch senses whether a door is open or closed and signals the dome/courtesy lighting and the door-ajar indicator circuit accordingly. It is cataloged for the FRONT, REAR, FRONT RIGHT and FRONT LEFT positions, so match your door location when ordering.
It drops in as a direct-fit replacement for the 1986-1997 Ford Aerostar, 1993-1995 Ford Crown Victoria, 1995-2003 Ford Explorer, 2001-2003 Ford Explorer Sport, 2001-2005 Ford Explorer Sport Trac, 1989 Lincoln Continental, 1991 Mercury Colony Park, 1990-1995 Mercury Cougar, 1992-1995 Mercury Grand Marquis, 1997-2001 Mercury Mountaineer and 1990-1994 Mercury Sable. See the "Vehicles it fits" section for engine specifics and the full application list.
- Copper alloy conductors: deliver strong electrical conductivity with low resistive losses.
- 100% tested: each switch is verified for both mechanical and electrical switching performance.
- Robust design: high-grade materials built to meet the demands of today's service professional.
- OE ignition heritage: made by a global manufacturer of original-equipment ignition products with quality control from componentry to finished part.
Interchange: S1097 · SW1375 · DJ6384 · 6W7Z14018A · E1VY14018A · SW1653 · SW6409
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this door jamb switch do?
It senses whether a door is open or closed and signals the dome/courtesy lighting and the door-ajar warning circuit accordingly.
Which position does the DS-850 fit?
It is cataloged for the FRONT, REAR, FRONT RIGHT and FRONT LEFT positions, so match the switch to your specific door location when ordering.
What are signs this switch may need replacing?
A dome light that stays on or won't turn on with the door, or a door-ajar warning that stays on or won't clear, may point to this switch. Diagnose the cause before replacing.
What vehicles does it fit?
Applications include the Ford Aerostar, Crown Victoria, Explorer, Explorer Sport and Sport Trac, Lincoln Continental, and several Mercury models. See the "Vehicles it fits" section for the full list and years.
What numbers does this switch interchange with?
It replaces S1097, SW1375, DJ6384, 6W7Z14018A, E1VY14018A, SW1653 and SW6409.
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