To clarify something, my old GPS was a Lowrance LMS 520c with blue connectors which were compatible with the new Lowrance Elite 7 HDI so by unplugging the old unit and plugging in the new unit, I am back in business with all the info I need to win the battle with the elusive walleye. I'll be at the Catawba ramp tomorrow and Sat at 7:30 AM. I'll be on Ch. 68 and listening to all with scanner.