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Welcome.   Hope you find this board as useful and informative as I have.  Recommend you spend a little time with the search feature, there is little to go wrong with our boats that hasn't happened to someone before.  But don't be shy about questions.  I often learn a lot from questions from others.  Note that Shamrock was built shortly after your boat and I am very happy with her.
Hope you enjoy your boat and this board.
Jim

Thanks ewengstrom and Ron, glad to be aboard!
Wingman

Thanks KWKloeber,
I will do a little more investigation next time I am at the boat. Regarding the driver sailing w/ the alarm on, no one else has been on board at the time so we're all trying to figure that one out

There is a separate Parts Manual for the B(C) engines that shows the Catalina wiring standard.   I’ll find and upload that in the next couple days. 
The Catalina schematic (and also westerbeke schematic) is also in the Ops Manual and Technical Manual for the B engines - on the techwiki website (“Manuals”)

https://c34.org/wiki/index.php?title=Manuals

I *THINK• that the engine model number and serial number (Universal’s s/n, not Kubota s/n) is engraved on a plate on the side of the exhaust manifold. Let me know if that’s not so.

A 35BC is a 35B(C). Check and there *should* be a tag with the engine model number - on the B series I believe it’s on the valve cover or the top of the exhaust manifold, behind the coolant filler/pressure cap. Maybe Ron can verify that.

Confused - if the alarm works, how is the driver leaving the key on while sailing??!!??

The circuit energizes the alt field, to wake up the alternator at low RPMs and start charging. Newer alts are a one-wire (output only) and are “self exciting” (no field excite needed.)

I used Mainesail's  procedure a couple of years ago for my new prop on to my new SS shaft.  It was easy and didn't take long.

To avoid any cornfusion, the blue hose is the “hump” hose. 

This is a hump hose:
Disregard the rust. Been cleaned up since photo.

The hump hose connects from the end of the exhaust riser to the muffler.

Looks like I have some homework to to as to what and where the silicone hump hose connects.  I do have an engine manual since I won't have much internet over the coming weeks.