Hey John, Did you just replace the bulbs with LED and no other changes to fixture? I've got 18 4bulb units in my shop I'd like to convert. Obviously, I won't be paying $400 a piece for Big A$$ units. LOL
Yeah Mitch, I just switched out the bulbs and didn't have to replace any of the the fixture's. All you need to do is bypass the ballast by cutting the wire's for it and re-wire. Positive to one end of the light and neutral or negative to the other side. It's fairly easy once you get the hang of it.
