For those of you looking to put together a network for the NavNet TZtouch (other Furuno products also), the Furuno CAN Bus Network Design Guide which can be found on the furunousa.com website is an excellant document. Well written and easy to follow.
Thanks sheakx! Our product development and tech support guys work hard to put together documents like this to help users. The web site is filled with these types of documents, you can always find them on the specific product page under the Manual/Documents tab or the Tech Info tab.