I bought my 1984 Catalina 36 MKI a few years back. This is my first shot a boat ownership.
To my surprise no upgrades had been performed. I did the alternator bracket upgrade in 2020. I have the wiring harness kit and will install that in the near future. I have been catching up on all kinds of overlooked maintenance as well.
I have ST 60+ a tridata display, a ST60+ wind display and a ST4500+ Raymarine autohelm.
I have been battling this seatalk failure issue since I bought the bought the boat. The speed log has not displayed any speed either. Last year I disconnected the speed (tridata unit) to the to wind display and the seatalk failure message went away and the system worked well enough to use the autopilot. This year the tridata diplay does not work at all unless all the seatalk cables are plugged in. Once the cables are all connected, the autohelm displays the seatalk failure message. The thruhull for the speed log was recently changed before I bought the boat. All the wiring back to wheel seems to be in good shape.
Any Ideas as to what could be a problem and even where to start looking?
Love my boat but she's not worth a fortune of new electronics, unless truly needed. Just hoping to find a cost effective way to get this fixed.
s/v Christine 1984 36 MKI
Great Lakes Yacht Club
Saint Clair Shores MI