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Recently purchased boat used couple times with no issues. After a big rain storm got some water in boat through cover went to start before taking to lake could not start. Turned key to on dash was lit up oil light temp light rev light beeping first time this has happened. I turned key off disconnected battery reconnected battery. Now only get solid check engine light when turning key on. No other lights no more beep. Battery is only year old and I tried charging thinking I ran battery down trying to start. Reading over 12V on gauge. Engine will turn over and trim works. My next step will be to look at tach wiring. Hoping not ECM at this point. Bought one of those com cables to see if that will tell me anything.