Not a bad switch. It may be wired wrong or two wires shorted.
Should be 4 wires. B+ and 3 selection wires.
Only one wire at a time must have +72.
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Not a bad switch. It may be wired wrong or two wires shorted.
Should be 4 wires. B+ and 3 selection wires.
Only one wire at a time must have +72.