They are common. Go to or visit anyarina supply and they are pretty standard. Do your guests a favor, and the other boaters! I just had the same issue. $120 was well worth it.
I am looking for a replacement control head for a Raymarine ST5000 Plus autopilot. Mine has no power going to the 12v Drive side of the unit. All else is good but that. If anyone has one laying around or knows where to find one online besides Ebay, please advise.
Thank you!