You beat me to it, Steve
Actually, the switch on the bass-side bout is also borrowed from the Trini Lopez..neither the Kessel Regular nor the Kessel Custom had it, but the Lopez Deluxe did ( the Lopez Standard did'nt have it, either ).
Oh, it was a "Standby" switch, by the way !
There was a fella in Texas in the '70s that used to import these guitars & add Organ circuitry to them, turning them "Guitorgans"
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