During these teen years where he is attempting to establish an identity independent from you, there will be much contrariness and many disagreements; he will be ruled more by his desire to fit into his peer group than by a desire to live by your rules. We need to still love our youngsters unconditionally during these years; we also need to "walk and talk" the values and principles that are the foundations of our family life. Our teens will be ever vigilant to point out any hypocrisy on our part (you just had alcohol and drove a car!). We can communicate that we respect them and trust them to be honest, considerate, responsible, etc., while letting them know that they, like you, are expected to live by the values that define who your family is.
Teens need to know there are natural consequences to all their actions. They need you to let them experience the natural results of their misbehavior; you need to separate the deed from the doer when giving the appropriate natural consequences. Despite their insistence that they don't need you to set up rules for their lives anymore, it is especially important during these tumultuous adolescent years that you show them the strength of your love and the strength of your values. When all else around them can appear to dramatically change in a moment's notice, you will, for the most part, remain his dependable (and, of course, often aggravating) nurturing parents.
Here are a few resources that I know will help you: You Can Say NO to Your Teenager by Jeanette Shalov et. al; How to Stop the Battle With Your Teenager: A Practical Guide to Everyday Problems by D. Fleming; The Parent's Guide: Systematic Training for Effective Parenting of Teens by Don Dinkmeyer and Gary D. McKay. I'm sure you will abide by and love and discipline your son (in the midst of constant changes in mood) as well as anyone can during these temperamental but also wondrous years.