Humminbird 9-M360-2-DDI-Y – MEGA 360 & 2D/MDI 7-Pin Y-Cable
This Y cable allows for the connection of a MEGA 360 Imaging transducer and an external 7-pin HW / MDI+ transducer to the same compatible HELIX fish finder.
- Combines MEGA 360 Imaging transducer and 7-pin Dual Spectrum/MEGA Imaging+ transducers into one 7-pin transducer plug for connection to the same, compatible HELIX fish finder.
- For use when connecting a MEGA 360 Imaging transducer to a HELIX fish finder, in conjunction with an external 7-pin HW / MDI+ transducer.
- This cable should not be used to connect a HELIX fish finder with both MEGA 360 Imaging and Built-In MEGA Imaging on Minn Kota trolling motors. Please refer to #720108-1 14 M360 2DDI Y for this specific rigging need.
| Specification | Details |
|---|---|
| Connector Type | 7-Pin Y-Cable |
| Compatible Transducers | MEGA 360 Imaging and 7-pin HW / MDI+ transducer |
| Compatible Fish Finder | Compatible HELIX models |
| Use Case | Connects two transducers to one HELIX unit |
FAQ
Can this cable be used with both MEGA 360 and a built-in MEGA Imaging transducer on a Minn Kota trolling motor?
Please contact customer service
Is this cable compatible with all HELIX fish finders?
This cable is compatible with compatible HELIX fish finders. Specific model compatibility should be verified with the user manual or product specifications.
What is the purpose of the Y-cable design?
The Y-cable design allows simultaneous connection of a MEGA 360 Imaging transducer and an external 7-pin HW/MDI+ transducer to the same HELIX fish finder.

Nicholas Sanderson –
This cable works perfectly with my HELIX 9000. I connected the MEGA 360 imaging transducer and a separate 7-pin external transducer, and both functions operate smoothly. The setup is simple and the cable is durable. No issues with signal or connection.
Sally Hemmings –
I used this cable to combine my MEGA 360 with an external 7-pin transducer. The fish finder recognizes both units correctly. It’s a handy solution for multi-transducer setups. Slight bulk when stored, but otherwise reliable.
Caroline Mathis –
Installed this cable with my HELIX unit and it’s been working flawlessly for several weeks. The imaging quality from the MEGA 360 is sharp, and the external transducer provides good sonar coverage. Easy to plug in and manage.