Something came up in a conversation today with RTK that has a lot of bearing on how well switches in general hold up.

How many people provide support for switch, battery, receiver, and servo wiring reasonably close to where any given wire makes a connection or exits an electrical "appliance"? How many provide for any type of strain relief in their wiring?

Permitting wires to hang loosely from a battery, switch, or servo places that wire and connection under tremendous flight loads as a plane is flown through any type of aerobatics. Leaving extension connections laying loose inside a plane, or wires left unsecured at the receiver, are under the same loads and subject to failure at any time. Wires pulled tight in order to stretch that last little bit of distance, rather than buying and using a longer one, place constant tension on the connections at both ends. That may be a battery, regulator, switch, ignition, or any other component.

Failure to adequately secure wiring can cause solder joints to break and foil traces to be pulled from pc boards of any associated component. Over a period of time various components and wiring should be expected to fail if left unsupported during flight. This is one of the little things that's rarely mentioned in aircraft set up and should be covered from time to time so we don't set the stage for flight failures through neglect. We need to take a hard look at our installations and consider how much movement is available to all the wires. How much weight will each bundle of wires be when subjected to aerobatics and how far can they swing? What will they impact at any portion of a swing? Will any of the wiring be pulling directly on it's connected end when subjected to a flight load?

Little things one by one but big in causing crashes.