Minn Kota MKR-MDI-2 Humminbird HELIX MDI Sonar Adapter Cable HELIX 7 G3 G3N G4
(Part Number: 1852086. The MKR-MDI-2 Adapter Cable is compatible with Humminbird HELIX 7 G3, G3N, G4 and G4N models. 2) The MKR-MDI-2 Adapter Cable (7-Pin) is made of high-quality rubber, plastic and steel.