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I screwed up Boat will not start

Good idea. I have a set on board bc that was my next step anyway. Prob worth swapping but will let things go for a bit see how boat behaves before adding another variable - then assuming I’m out of the woods swap plugs plus change oil
 
I still cannot access or boot connext with house batter on only but not sure if that’s really a problem or not.
On my 2021 The connext will not boot unless both batteries are on
 
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