Here is the finished version of the red/green light. We’re calling it “The Beacon”. Currently, it is being tested around Napa Valley by an all-star crew. Some changes-since the first version include; a A23 battery, which is 12 volts and has a low profile so it fits in a small compartment, a closure using a magnet for the battery compartment, (I do love a strong magnet), and the switch is now moved from the middle to the red light area. This was better placement for us right handed people. It also helps hide the circuitry. Haven’t decided on a price yet. Once we figure that out we’ll put it on the site for real. If you have to have it soon- just email me. Also, if you want a leftie version I can do that too.