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I would check the wire harness that goes into the door to make sure all the wires are good.
First thing I checked was fuses. Then moved on to the wiring harness. Replaced. Neither fixed. Then I bought a new switch. No help. Ended up being the relay in the fuse box!
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
