GJ,

The reason I was asking was because of something I saw today. Inexpensive florescent fixtures with photocells (small 'eye' on top) were installed all around a house last year. One fixture in the front recently stopped working and an exact replacement couldn't be found. It was decided that one from the back would come up to replace the one in the front and keep a matched set. All the lights were functioning fine to my knowledge.

When the one from the back was put in the front it would not shut off. The location in the back was unsheltered with the 'eye' pointing at open sky. The location in the front was now under an overhang (brown) therefore lightly shaded. The existing fixture about 4 feet away in same location was operating fine. I was wondering if it somehow could've gotten used to the lighter location over a years' time. Keep in mind that this is probably the cheapest form of photocontrol available. [Linked Image]

Any ideas?

Bill

Bill