Just FYI lowrance makes a adapter cable to plug lss1 to back of your gen3.....But if you do a search on BBC or Walleye Central guys have been plugging lss 1 directly in to gen2 touchs and gen 3 touches, claiming it works fine.

- Lowrance HDS 12 Gen 3 transducer choice - Page 3 - Walleye Message Central
Post 27 Walleye central