Of if you are going that far, a faster solution is put a container of gasoline under the socket, short it out, and the switch that starts the fire is obviously the empty one (pointless to know at that time though)automobus wrote:Yes, tell us!
In the mean time, I thought of another incorrect solution. Like my other ideas, it requires unmentioned equipment and assumptions.
Switches: two in common position, one odd. On the way up, fetch water. In attic, associate odd fixture with odd switch. What follows is rather unsafe. Get water into one of the other two fixtures. After a significant amount of time, by capilary action, the water will make its way down the wiring. Back by the switches, using tools if necessary, determine which circuit is waterlogged. Solved.
Or look at the wires for distinguishing marks (date stamps, production codes, lot numbers...) and match the light to the switch that way.
BTW, the train problem has not been solved yet (although the light is admittidly more fun to work on





