[firstlight]

P

I have the same issue with a 2004 35 open.  I did zero in on the two in cabin Carbon Monoxide alarms being hard wired and drawing ~2 amps each.  Not certain if this is the final culprit-I disconnected them from power to see.  I will check later this week.  Pls keep me informed and I will do the same.

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I identified the two orange wires they are from ECM computor for engines and should always be hot. Please let me know how you make out with Carbon alarms. Thanks

[rcwiegand]

Disconnected Carbon alarms and it resolved most of drain issue. House batteries still drained to 9+ volts after sitting two weeks in dry dock with switch off-this used to be the case in less than 24 hours. I will replace hard wired alarms with new ones with internal batteries-like the smoke alarm. Still need to put a amp meter in series at the battery feed to isolate and determine the remaining drain.