I have a 2008 tracker pro team 170, boat has the older style livewell with a fill spout and a threaded tube in the bottom that I assume is an overflow and a drain when you take it out. Switch has 3 positions off in middle livewell top and aerate bottom, seems like it does same thing in either position, curious about the operation if somebody has the same livewell. Also would it work on the same pump or 2 different ones. I can see 2 pumps that look almost identical not sure if they're both for the livewell or one is the bilge they are right next to each other. Thanks for any help or info!