Electrical Problem with No Tach or Starting 225 TXRP

[242]

I am hoping someone can steer me in the right direction here. I have a 1991 Yamaha 225 TXRP that I am having an issue with. It started a few trips ago when I would be getting up to speed, I would lose my digital tach and the engine would bog down. It would not actually shut off but would slow right down. While the tach was gone I couldn't start the engine. No clicks, no ticks, nada. The tach would come back on in a minute or so. It has got progressively worse. No I have it back in my driveway and have no tach in turn I can't start it either. All wires to the engine (POS + NEG) are new. I have two new batteries. All of my house electronics (Fish finder, GPS, radio, lights, etc) work just fine.

[rodbolt]

somewhere between the battery,engine block,stater relay and your keyswitch something failed either a bad wire or a bad connection.
that engine will run without a battery,wont run well but it wil run.