Definetly not overnight since I've left both of my maplights on for almost 14 hours and the truck started right up. I bet the clock is a very slow drain so maybe a week or two.
yeah thats what i thought, and if irun the car everyday just running to the store would it run down eventualy? or is it such a slow drain, running the car everyday would keep it up?
I meant it could sit for two weeks with the clock on and no driving it still wouldn't drain. Even starting up your truck for 5 minutes would start that two weeks over.