I agree with Jamie. The correct wiring is to have chassis power for the continuous on to maintain the radio preselects and to keep the clock time and date correct. The radio power should be wired to the house batteries. So placing the USE/STORE switch to store should disable the house batteries and you should not be able to listen to the radio until the switch is put in USE.
If the radio operates when the switch is in store it sounds like Thor wired both radio power switches to the chassis battery.
The power drain to maintain the radio preselects and to power the radio clock will eventually drain the chassis battery, but it sounds like yours is draining way faster than normal.
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Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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