Hi Mark, sorry I haven't got back to you in some time about the problem I'm having with my auto pilot, but after a friend, an electrical trades person poked around a lot he concluded that there was a power lost from what I can only explain as the Raymarine computer unit, a box approx. 12"x9"x2" back down to the selector switches for which pilot I wish to use. As he was not sure of what to poke in the box he advised that I should get a real Raymarine techo on the job which I'm trying to do. I'll keep you informed of the out come.
Kind regards Peter