This is the way I read the OP: The outside LED lights will not come on when their switch is ON unless you also turn ON the lighting inside the XLR. The yellow outside lamp, some may call this the porch lamp, also will not come on unless the switch for the interior lamps is ON. I would consider this to be wired wrong. It sounds, to me at least, that the factory ran the "HOT" wire(s) for the LED lamps and the porch lamp from the wrong side of the interior lamp switch. They may have attached the LED wiring and the porch wiring from the side of the interior lighting switch that is HOT only the interior lighting is turned ON. Confirm whether the interior lighting is either 120vAC or 12vDC, probably 12vDC, and assure that power to the switch is OFF. Remove the switch to look at the wiring to confirm whether that may be other wiring attached to either side of the switch. I'm still betting that the wires for the LED lighting and the porch light are on the wrong side of the interior lighting switch
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