Door Jamb Switch For Mercury Grand Marquis Rock Solid Direct Fit Replacement Built Tough Straight Up Reliable Lock System Control Plug N Play Zero Hassle Install Premium Aftermarket Component

Single OEM door jamb switch for Mercury Grand Marquis
✔️ WVE 1S1338 direct mount replacement for lock circuits

This door jamb switch acts as the main electrical gate for your vehicle's locking and interior lighting systems. You install it directly into the driver or passenger side frame where it detects whether the door actually closes. The unit replaces worn sensors that cause security lights to stay on or deadlocks to misfire during normal daily driving.

✅ WVE manufacturer part number 1S1338
✅ Compatible with multiple factory Ford cross references
✅ Direct bolt on design removes wiring guesswork
✅ Rugged metal housing resists road salt and moisture

💡 What should you check when choosing a door jamb switch for a specific car?
Confirm that the replacement unit supports your exact model year and trim level.
Verify the original connector shape matches the new circuit layout.
Check the mounting bracket position to ensure proper door alignment.
Reference the original equipment manufacturer cross reference list.