2016 z3 with raptor 400. I’ll try to keep it brief. Got an error code, ran it to dealer and alternator was bad. Replaced that and now having numerous weird electrical issues. 1. Depth reading will sometimes read wrong but then correct itself. 2. Screen says ballast bags are drained but they aren’t. turn boat off and it reads more accurately. 3. Electronics were on but engine off for an hour, went to start and starter cranked fine but engine would not turn over. After repeated attempts to start, turned battery switch off waited a couple minutes turned back on, then it started and when heading back to launch, had a strong smell of fuel. So guessing some electrical fuel issue. All these things were not present before the error code and alternator replace. Seems like numerous non related electrical problems but not complete electrical failures. Any ideas where to start?