Well.... got it wired up enough to start, just in time for rain to come in.... so have to wait to dig into it further.
The engine harness is different than the boat harness, so I left the engine harness as is and started swapping the boat side over under the dash.
I've got ignition, gauge lights, oil pressure gauge.... but... boat lights, volt meter, water temp, and tach still aren't working yet.
Also didn't get to throw the voltmeter on to see if it's charging.
Something rattles too.... maybe a bad mount. Not sure yet.....
Progress though. Hoping for good weather and a lot more progress tomorrow.
No fires yet. lol.