No power anywhere

124,000 MILES • 5.4L • 4WD • AUTOMATIC
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WATERMANLARRY
  • MEMBER
  • 1 POST
When i turned the key the motor started to crank for about one second then everything went dead.no lights no wipers no gauges, nothing when i turn the key. i checked the battery with a volt meter and it says 12.65. battery terminals are clean, cannot find any blown fuses. my manual says when the key is on the wipers and headlights should work, but they do not. i was going to replace the battery but when i got a good reading with the volt meter i assumed the battery is okay. I am lost. any suggestions would be appreciated. Thanks, Larry
Aug 12, 2019 at 12:58 AM
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BMDOUBLE
  • ✓Experienced Mechanic
  • 1,139 POSTS
I have seen many ground issues and ignition switch issues with these trucks. I will include the starting system diagram but one easy way to verify ground continuity is to get a set of jumper cables and go from the battery to the chassis to see if things change. You can also try that from the body to the chassis.
Aug 12, 2019 at 2:32 AM
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