They are from to bottom:
Accy - On mine, this is not hooked to anything, I assume it is there
to wire to what ever accy you may install
Navigation Light - (frt red / green light)
Anchor Light - White light on pole that plugs into rt rear of boat
Blower - The blower motor to remove fuel fumes from the engine
compartment prior to starting
My swim platform broke too (the ladder part snapped off) there are a couple listed on ebay from greatlakeskipper.com but not the correct one for our boat. I checked with my local bayliner dealer and they told me bayliner no longer makes that swim platform. It seems the only option is to get an aftermarket one. The holes however will not match up, so it will be neccasary to fill the old holes and drill new holes, but this will be a better swim platform and should last longer / be stronger. As for the ski locker latch, mine is not broken, so I have never looked for that. Hope this helps.