I have a 1996 Ford F-250 5.8L and it will not start. It clicks but won’t turn. It has a new battery, alternator, starter,...

Do you think that it might need a new alternator because the battery won’t hold a charge?

Do your dash lights turn on? If so you probably have a good battery and a decent connection. I would replace the spark plugs and the starter. If you can’t hold a charge then it is the alternator. If your truck won’t start after trying to jump it then it’s probably your starter.