Where can I find the harbor breeze ceiling fan light fixture only model L808. My fan works but the fixture is has intermittent issues. The comes on when it wants to. I just want to replace the light fixture only.

Probably impossible if more than a couple of years old.. Lowe's has a good assortment of universal lights. Check in their fan area. HD has some but not a good as Lowe's.

Maybe try Harbor Breeze Ceiling Fan Parts - Ceiling Fan Manuals (http://ceilingfanmanuals.com/harbor-breeze-ceiling-fan-parts/)