No it won't. I have a Pioneer AVH head unit, before I fitted a fuse tap it would always loose memory of preset radio stations and time ect . If not driven for 4 days battery would be flat and would have to jumpstart, then when winter came it got worse automatic home/away lights stopped working when opening the car ,slow starting up sometimes struggled & pretty much killed my battery. Fitted a new battery and it would still loose memory and if not driven for a week it would still struggle to start so I knew it had battery drain issue, fitted fuse tap and everything has been perfect, no more memory loss, no more flat battery after days not driven
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