I've got an older minnkota bow mounted trolling motor and an older lowrance depth finder. When I hooked up the depth finder (to the batter the trolling motor runs on) everytime the motor is on the screen goes sort of funny. If I remember correctly the whole thing went black like I just drove over a weedbed sort of thing. Now I know I'm not supposed to hook up the depth finder on the same battery as the trolling motor so I'm wondering if that was the problem, or if it was because of the motor itself interfering with the transducer?
