Question about 1986 Ford Crown Victoria

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Car battery always going flat!

Every time after i go for a drive at night the next day, the battery is flat or really doey. I had a look at my alternator and saw that there was a wire with a plug on the end of it, dangling there. It seems to me that there is meant to be something plugged into it! So i was just wondering if there was meant to be something plugged into this plug that is dangling from the back of my alternator. It is a 1986 ford falcon XF.

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  • hsv_monaro_i May 18, 2010

    yeah the light goes on and out norfmally, nothing has changed there! but yeah

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It sounds like the alternator light wire , and it wont charge unless its connected. You will probably see a square hole near the main terminal, should plug back in. then the light inside on the dash should come on with the ignition on, and go out when the engine starts, to show you the alt is working

Posted on May 16, 2010

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  • Ford Master
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Just a spare wire i think for a different model with the same wiring loom ,try a new alternator and not a scrappy yard one

Posted on May 16, 2010

  • gavin jones
    gavin jones May 18, 2010

    If the light works the alternator probably works, put a volt meter across the battery, should show 12v engine stopped and around 14v engine running. if its charging and you havent got extra driving lights, the battery may be going, especially as it gets colder weather. Inox can sometimes revive an old battery, but if its already a couple of years old it may need replacing.

    The wire? could be spare or from a radio suppessor

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