I replaced the alternator (twice) in my 2011 honda pilot touring. Now the alternator makes a siren noise when idling/driving slow. I took a 3 hour round trip last week. The next day, my battery was at 11%. I did notice that the siren noise was louder than usual. My hubby thinks it is the Electronic Load Detector Unit; we have ordered one, but can not figure out where it goes. I can not find any electrical drawings to trace it, and I have searched the net for DAYS looking for it. The few videos I can find, has a different fuse box than the 2011 pilot. Help? any other ideas what might be causing this?