Engine wiring: circuit breaker

I am attempting to put together an accurate wiring diagram for my boat, starting with the engine. I am using the following diagrams, the first being from the PCM manual.

My boat is 2 hrs away, so I cant use it to verify my diagram- I was hoping to get some input here.





There has been discussion on this site that there should be a breaker between the alternator output and the battery. This does not seem consistent with the PCM manual, which states,

"At the connector plug of the engine wiring harness, at the rear of the engine, a short orange wire is provided which connects to the battery cable terminal of the starter solenoid. This wire is provided to shunt the alternator output directly to the battery, if a voltmeter is used in the instrument panel."

My boat uses a voltmeter (no ammeter). What is the correct set up?

I am also looking at the starter solenoid wiring, as the diagrams above do not agree and are not very clear. This solenoid from a SkiDIM has 4 posts. I a$$ume the 2 large posts are for the battery and starter. I a$$ume the other 2 posts are for the ignition (purple on the diagrams, but I could have sworn there is a R/Y wire on my ignition switch), and the neutral safety switch? Can anyone clarify?

I WENT TO LOOK AT MY BOAT, THE RED WIRE COMING FROM THE IGN SWITH CONNECTS TO THE HOT SIDE OF THE SOLENOID ON THE LARGE POST AND THE WHITE WIRE FROM THE IGN SWITCH GOES TO THE S TERMINAL

The more I think about it, the "hot" for the starting circuit is yellow/red stripe, going from the "start" position on the key to the N safety switch then to the small post on the relay.

M3Fan wrote: The more I think about it, the "hot" for the starting circuit is yellow/red stripe, going from the "start" position on the key to the N safety switch then to the small post on the relay.

That sounds right, and would agree with the wiring chart you mentioned. Seems like there are a few errors in PCM's diagram.

Would this diagram be correct? Does the alternator output connect directly to the battery without going through the breaker?



Thank you both for your input... Im getting closer!

I think that's a 50A breaker. Maybe I'm thinking of the 00.

Here is the other configuration that may make sense. This has the the alternator output being routed through the large engine circuit breaker to charge the battery. Is this the correct setup?

That's outstanding. Great work. I noticed the diagram has a 50 AMP breaker

Wouldn't the output of the alternator go to the unfused side of the 50A breaker?