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I have an 03 taurus ses.i lost the ability to use turn signals, so to check relay status I turned on hazards. now the hazards,turn signals,power windows, locks, radio, dome light,moonroof, wipers and speedometer do not work. when I turn car off,(with the door closed, key out of ignition and hazards on) all of the accessories flicker randomly. any possible suggestions. I checked all fuses and relays, all are good. please help
 

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My first impression is a bad ground in the body wiring harness.
Probably a ground strap under the dash that is loosing it's 'connection' to the metal it is bolted to.
I would suspect somewhere where it could be subject to moisture, like under the carpet in a low spot.

The wire harness authorities here will have to direct you to the specific locations.
 

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It could very possibly be your TRS (transmission range sensor) switch. Check the post in the Topic Finder and see if it relates to your problem. Symptoms sound the same....
 
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