Question about Ford F-150

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I put a new alternator in my 1979 f 150 and it will not charge the battery so Iam hoping I have the wires crossed some where I need to know what wires hook up where i have 4 wires to singe wires and 1 double wire.

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The issue could due to the voltage regulator not working properly.

If the wires have been replaced correctly to the alternator, look for a metallic box near the alternator, probably on the fender wall.

The price for the voltage regulator should be around $20.00.

It is a good idea to replace the voltage regulator when you replace the alternator, since both are probably the same age.

Hope this helps!

Posted on Nov 18, 2009


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