6 mo. Old fan works fine but lights quit a week ago .new bulbs ,checked wires all seems OK.

Need to use a voltage tester to follow the circuit from the switch to the ceiling outlet box, and through the wiring harness inside the unit, to determine where the problem is.

Could be a defective switch, or a loose splice or connection anywhere from the switch to the lamp socket.

Hi there, read the section on "My light kit dosent work (http://www.ceiling-fan-brands.com/ceiling-fan-light-kits.php)"

At the bottom of the page there. There is a link there too to how to use a multi meter/ volt meter to determine the problem.

Also in terms of checking the wires you may want to check this article which is very in depth on ceiling fan wiring (http://www.ceiling-fans-n-more.com/ceiling-fan-wiring.php).

Good luck!