Petronella
Well-Known Member
I've just purchased a nice secondhand Yeoman Sport plotter on eBay. It has come with a short power/data cable. I want to connect it to my old Garmin 12 GPS. I know I have to connect the data in and out wires between the two but is power to the Yeoman (12v) provided from the GPS (6v-8v) or from the boat battery via, say, a cigarette lighter socket?