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Discussion Starter · #1 ·
The switch wont lok or unlock from drivers door switch, swapped with a working switch still nothing, what could cause this?
 

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1999 Ford F450
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Did you happen to look at wiring connector? I’m finding on my 99 f450 that connectors are corroded.

This situation also happened on another vehicle I owned in my life and it turned out that the door hinge just where the wires went into frame of vehicle, the coating on the wire rubbed off and caused a short.

Is this happening on passenger side door? And if so perhaps a fuse might have decided to retire.
Good luck!!
 

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Discussion Starter · #4 ·
No the power transfers on both lock and unlock from drivers switch to passengers switch in both lock and unlock, so not wires in door I already took the boot off and looked
 
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