Thanks John, and Mr. Ghost!

I'm only looking to power 2 or 3 Fresnels at the same time. Any more than that and I think the effect of any individual lens would be lost. At least as I have them arranged.

I could probably rig something up if I can find a parts source. All of the Fresnels use what look to be old fashioned flashlight bulbs. When running on batteries, it's (2) AA cells, so 3V DC? But I don't know what the current draw would be.

It was just an idea I had after rearranging my office and the HLs display. It would eliminate some clutter.

Mr. Ghost, if I can't figure something out, I'll contact you to take you up on your offer.

Rick