the engine side harness red wire that has the 50A breaker on it should be connected to the same post on the starter as the batt cable is
The other side of the harness....that goes to the dash....the red wire is the main supply of power for the dash. So it will will most likely go to a bus bar and then distributed out...your switches get their respective power supply...and your ignition switch is also hooked to it...etc

Lol!!! There's possibly another problem here😂🤣😅 Everything on the dash is working!!! Im just getting started on redoing the stbd wiring. I will look into this. Thanks

well that red wire is getting power from somewhere. Someone may have run it to the batt post on the back of the Alt instead of the starter....would still see the same power supply...just a different location. And if the Alt wire going to Batt would break or short then the dash would be dead all together......if the red wire was on the starter post then that Alt wire would be its own entity and you potentially would still have power at dash.
It happened to me once where the Alt wire rubbed against the exh manifold and shorted out. Smoke filled the cockpit and i was convinced we would be on fire. Lucky for me it was only the wiring from Alt to starter that smoked. Motor ran fine otherwise...

I forget...do you have twins? if so the power at dash could be coming from the other engine side as well...all depends on how its wired up...

Yes. At this moment the stbd engine wiring is still wrong so that is probably/ hopefully where the dash is getting power. Ill know in 30 minutes or so 👍

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