I have a Sharp Seapilot on my 1979 Endeavour37A. I found a rather robust conceversation here from 2012, that has convinced me not to just yank the thing. For the past three years (extended shakedown I've occasionally pulled the manual out (see link) and inevitably toss it aside, because I can't even get the blinking lights to balance. On this boat it's not a priority, but it is a mystery that one day I hope to solve. Electronics are not a forte of mine, but I would like a run a diagnostic. Thanks.
https://www.boote-forum.de/attachment.php?attachmentid=257958&d=1295315813
https://www.boote-forum.de/attachment.php?attachmentid=257958&d=1295315813