Lights stay on on 2006 Chevrolet Equinox

my question is when my wife came home the other day she noticed that the lights on the suv stayed on after she turned off the ignition. We have had this problem before and found out it was the BCM causeing the DRL to stay on. I have since taken out the DRL resistor and we now control the lights manually. My question is will this have a effect on the battery if there is not a actual off switch on swtch handle? If so what would be a solution to this problem

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