I have a Harbor Breeze ceiling fan and everything was set up correctly and everything worked for almost a year and last night after a nap the lights wouldn't come on. I check the light bulbs they work fine, the fan itself still works perfectly but the lights will not come on at all for any of the 4 lights. I also checked the wiring from the light kit to the fan and the wiring fom the fan to the ceiling and its all done the way its supposed to be.. what can the issue be?

If the bulbs work and he fan itself works then you should check the swithc for the lights on the ceiling fan. The easiest way to do this is to see if electricity is going into the switch and then turn the switch on and see if electricity is coming out of the switch.

Is it a remote fan?

General ceiling fan troubleshooting and help FAQ- Ceiling Fans N More