Last time i sort of looked into this it appeared to be quite complicated (need a Mercury Engine Data Gateway Module and possibly other items as well ) and appeared to be a bit $ exe to make happen on a Lowrance HDS for what limited data you can get to show from a Merc 60 Hp 4 stroke - so does anyone actually have this happening and can give some guidance on maybe how to actually do it (preferably without costing an arm and a leg)
cheers