Buccaneer wrote:

You’re off to a good start!
On that “input / output” thingy, would there be some kind
of cord with a jack that plugs into the hole?

Tom,

I’ve seen a pic of the light that plugs in. It is like a flashlight with a cord on it with a male plug on the end. I assume a similar wired plug would attach to a dry cell for the battery side.

Tom Manley has one. Maybe he will post a pic on here.