Just a lot of weekend stuff intervened,
back to this:
Let us list what parts
you have just to be clear:
Judging by the Batteries
you are using a Negative ground (very important point)
Battery 2 (assuming these are two identical batteries - hopefully ?)
Cole - which appears to be a SpDt switch to change Load from one battery to the other
Solenoid - hardwired into the Starter
'2 way switch' = a label hanging in the air over what appears to be an on-off (SPST) ?
Under that is what is probably a 3-terminal connection block ?
And up in the top of the drawing is a space indicating a windlass
Are there any other components to add to this list ?