Chasing OLD SeaTalk cables...

[Chuck - Raymarine - Moderator]

Steve,

SeaTalk is now and has always been a three conductor communications protocol having the definitions provided within my prior response. Accordingly, SeaTalk cables have alway contained only the three previously specified leads. However, the interface cables supplied with some products may contain leads for not only supporting SeaTalk communications, but other communications protocols as well. The SeaTalk leads of such cables would typically have been connected to a SeaTalk cable via a SeaTalk junction box or via splicing the corresponding leads of each cable to one another. The latter would be documented within the corresponding product's installation/owner's manual.