Hello all, I have a 2017 Monterey 224 fsx, with 6.2 mercruiser and bravo 3 outdrive. I recently connected my #1 battery to adjust my trim in storage. A few seconds after connecting battery I heard this rapid ticking sound. (Video attached). It is not coming from engine bay, it sounds like it coming from the round rubber spot under boat. I'm wondering if this is the transducer for my navigation/depth finder which came from factory. Only other things to note was that the #2 battery stayed disconnected at terminals and switch, and I noticed the mercathode light on engine wasn't on.
