Humminbird 9-M360-2-DDI-Y - MEGA 360 & 2D/MDI 7-Pin Y-Cable

Upgrade your fishing setup with this essential Y-cable designed specifically for Humminbird HELIX anglers who demand the best in sonar imaging. It seamlessly merges your MEGA 360 Imaging transducer with an external 2D or MEGA Down Imaging (MDI) transducer, routing both signals through a single 7-pin port on your compatible HELIX unit. This means fuller coverage—360-degree views around your boat paired with precise down and side imaging—without the clutter of extra wiring or the need for multiple ports.

Unlock Superior On-Water Performance

Imagine casting lines with confidence, knowing you have unparalleled sonar intel. MEGA 360 sweeps a full circle every few seconds, revealing structure, baitfish schools, and lurking predators in stunning detail up to 125 feet away. Pair it with a dedicated 2D CHIRP or MDI transducer for hyper-detailed bottom tracking and vertical imaging, and you transform your HELIX into a fish-finding powerhouse. This Y-cable eliminates guesswork, letting you focus on the thrill of the catch rather than cable management.

• Streamlined Connectivity: One plug handles it all, freeing up ports for other accessories like GPS or networking cables.
• Crystal-Clear Dual Imaging: Run high-frequency 2D sonar alongside MEGA 360 for comprehensive water column analysis—perfect for walleye, bass, or offshore adventures.
• Proven Durability: Built to withstand harsh marine conditions, ensuring reliable performance season after season.

Perfect Fit for Your HELIX Series

This cable shines on select HELIX models optimized for advanced imaging. It's tailored for units like the HELIX 15 MSI G4N, HELIX 15 MDI G4N, HELIX 12 MSI GPS G4N, HELIX 12 MDI GPS G4N, HELIX 10, HELIX 12, HELIX 8, and HELIX 9 series. Always double-check your model's port configuration to ensure a plug-and-play experience. Note: It's not intended for HELIX units paired with Minn Kota trolling motors featuring built-in MEGA Imaging—opt for the appropriate 14-pin variant in those cases to avoid signal conflicts.

Cable Specs at a Glance

Easy Setup Tips for Anglers

Getting rigged up takes minutes. Mount your MEGA 360 on a pole or high-speed mount for optimal spin. Connect the external 2D/MDI transducer to the shorter arm of the Y-cable, plug the MEGA 360 into the longer arm, and snap the main 7-pin end into your HELIX. Power cycle your unit, then tweak settings in the sonar menu to enable both sources—MEGA 360 on one pane, MDI on another. Pro tip: Zip-tie excess cable to avoid snags, and test on calm water before hitting the tournament trail. This setup excels in spotting suspended crappie or navigating rocky bottoms.

Real-World Edge for Serious Fishers

Anglers rave about how this cable turns fragmented sonar into a unified battlefield view. No more switching screens or compromising on imaging quality. Whether you're jigging deep structure on Lake Erie or chasing stripers in coastal bays, the combo delivers actionable intel that puts fish in the livewell. Backed by a solid 1-year limited warranty, it's a smart investment in gear that performs when it counts.

Frequently Asked Questions