I have picked up on of these from ebay but no manuals, does anyone know the connections for the wiring, there are 4, red, brown, green and white plus the screen.
"Go to the navman site and you can download the manual free" Do you have a link, I have tried www.navmanmarine.net and there is no manual for the 1220A.
I am really not sure which wire to use for the 12v -ve as there is no black cable. It would be logical that +12v is red and that white is NMEA, that leaves me with brown, green and the screen.