Campy, Here's what I made.
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I called them washers in my earlier post, but the plug I made was actually made with rubber grommets that protect electrical wires from rubbing on the hole they go through. That just pushes into the top of the Graflite. So there are still batteries to trigger the solenoid. One of the reasons it is a bit wiggly is because of the grommets being perhaps too soft fro this application.
Looking at the picture, though, I'd really have to pull it back out of storage to verify how I have it configured. My recollection was one cable to the solenoid to actuate the Graphex shutter and a second cable to the bipost terminals on the shutter. But that's not what's shown in the picture and I can't recall if I found another way to reduce the cable complexity.
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And later I found these, but as you can see I haven't tried either of them yet. Apparently we aren't the first to conceive this notion.
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