Question about 1981 Ford F 150

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No power motor will not crank ,no lights no nothing all fuses are ok what is wrong

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  • Ford Master
  • 5,256 Answers

Start with the battery. Make sure it is at a full state of charge, at least 12.6 volts on a voltmeter. If it is under 12 volts have it charged, or if battery is over 4 years old, best to replace it.

With a good battery, clean all battery connections. Get rid of all corrosion so you have a clean metal to metal contact. A solution of water and baking soda helps a lot. Replace questionable battery cables. Then get a good tight fit on all cables, battery, starter, and ground.

Now if you still have no power to anything, lights, or switch, horn, anything...then you will have to find the fusible links just off the battery that distribute power to the head light switch, to the key switch, to parts of the fuse panel, etc. If fusible links blow, they can be cut out and replaced. They act like fuses, designed to burn out to protect the rest of the circuit from burning up from a short or amperage surge from a shorted electric motor. Once you get power to the lights and the key switch, you should be good. Go from there.

Posted on Oct 20, 2013

Testimonial: "I have checked the fuses links coming off the battery they are ok ,going to take the steering wheel off so I can get to the key sw also going to take the light sw out sense it is a separate circuit .thanks for the info if you come up with any thing else please feel free to let me know"

  • montehammons Oct 20, 2013

    Look for the fusible links on the starter relay bolted on the fender-sometimes they are there.

  • montehammons Oct 21, 2013

    If you can get to the electrical connector for the ignition switch easily, first pull it apart and check for a hot wire to the switch-one wire should be hot at all times-if you have power going to the switch, will probably have to replace it. But if no hot wire to switch, you still have a power distribution problem. And same for the light switch-one wire to it should be hot at all times-check with a test light or voltmeter.

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