Need a solution for a multiple switch circuit
I get the sense that you want a thing with N buttons spread over a wide area
the buttons each light a lamp and extinguish all other lamps when activated
Here is my solution  power (12v) is applied at one end and 3 wires connect between each adjacent pair of modules I've called the wires &quot;interuptor&quot; &quot;power&quot; and &quot;return&quot; that last module connects to a stub plug
Each module consists of a SPDT industrial pushbutton, a 12V relay a diode and a capacitor and the lamp enclosed in a suitable case,  the lamp could be external to the case.



simulate this circuit &ndash; Schematic created using CircuitLab
when a button is activated it interrupts the current flow on the interuptor
line shutting off power to the &quot;power&quot; line causing all the other relay to reset,  in also diverts power to this relay causing it to set.
and charging the capacitor, when the button is released current is resored to the power line and current flows through the relay contacts lighting the lamp and through the diode powering the relay.
the purpose of the capacitor is to maintain current to the relay while the switch is changing between its two states. if use find a switch with make-before-break then the capacitor is not needed and the diode can be replaced with a wire.
for the interconnects something like XLR connectors could be used they are rugged and have three terminals.