F 150 2WD Pickup V8-4.6L SOHC VIN W (1998)
The key-in-ignition warning chime inputs are:
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Ignition switch RUN position (battery potential on both RUN and RUN/ACC inputs).
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Ignition switch ACC position (battery potential on RUN/ACC input only).
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Key-in-ignition switch (grounded with key-in-ignition, open circuit with key-out).
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LH door ajar switch (open circuit with door closed, grounded with door ajar).