Ford Halts Plant Output for Lack of Parts  DETROIT (Reuters) - Ford Motor Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=F.N target=/stocks/quickinfo/fullquote"&gt;F.N&lt;/A&gt; said on Monday it  has stopped production at its assembly plant in Georgia for at  least a day because of lack of parts.