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Here’s a simple solution for running John Deere 3-pin controlled attachments on machines equipped with a Deutsch HD 14-pin connector, such as many Bobcat and Cat D-Series skid steers and other compatible loaders. This electrical adapter bridges the gap between the 14-pin machine connector and the 3-pin John Deere attachment plug so you can put your attachment straight to work.
Installation is straightforward: plug the female 14-pin end into the machine-side socket, connect the 3-pin end to your John Deere-style attachment harness, start the loader, and operate the functions using your factory auxiliary controls. It’s a true plug-and-play setup designed to get you working quickly without cutting or modifying the original wiring on your machine or attachment.
The adapter is wired using original-style components and is compatible with a wide range of 14-pin machines, including Cat D-Series, Kubota, Case, Gehl, Mustang, Takeuchi, and New Holland loaders. That makes it ideal for mixed fleets where John Deere 3-pin attachments need to move between different brands of equipment.
Note: John Deere 3-pin systems provide only two switched output ports. Keep this in mind if you are planning to run attachments that require more than two electrical functions.
For detailed wiring guidance, pin layout discussions, and answers to common questions about matching machines and attachments, visit the technical FAQ section:
A generic machine-to-attachment adapter guide is available to help you understand operation, pin movement, and best practices when using this style of adapter:
Download the Generic Machine to Attachment Adapter User Manual (PDF)
Both ends of this adapter are built to match factory pin specifications using original-style components. However, we cannot guarantee that your particular machine was ordered with all available electrical controls, nor that your attachment was wired from the factory to a universal standard. This is especially important to verify on auction purchases or second-hand attachments bought online.
Tools and instructions are supplied so you can relocate pins if needed to make your machine and attachment align correctly. Always confirm pin-outs before applying power, and consult a qualified technician if you are unsure about your wiring. Proper setup helps protect your equipment and ensures safe, reliable operation on the job.
This adapter takes the 14-pin electrical output from a Bobcat (or compatible machine) and converts it so you can run a John Deere-style attachment that uses a 3-pin connector. It makes two otherwise incompatible systems work together.
The adapter works with machines with a standard Bobcat 14-pin machine-side connector and attachments that use a John Deere-style 3-pin harness. Always verify your attachment uses the 3-pin format before purchasing.
No. The adapter is plug-and-play — you plug into the machine’s 14-pin port, and plug your 3-pin attachment harness into the adapter. No cutting or splicing is needed (assuming standard connector formats).
The adapter provides the 2-pin 3-pin output (ground + power/signal) needed for John Deere-style attachments with simple wiring — suitable for basic attachments like hydraulic valves, lights, or small electrical tools depending on the attachment design.
It’s designed for standard John Deere 3-pin attachments. If your attachment requires high current or complex functions (multiple solenoids, high-flow hydraulics, advanced electronics), you should confirm compatibility before use. For heavy-duty attachments, ensure wiring and power requirements match the adapter’s capabilities.
Yes — it’s a simple plug-in adapter without any soldering or wiring work needed. As long as connectors match, installation is straightforward and quick.
No. Because it’s a plug-and-play adapter with no modifications to machine wiring, it does not permanently alter your machine’s wiring or electronics. You can remove it at any time without damaging factory wiring.
Yes. As long as the machine has a compatible Bobcat 14-pin port and the attachment uses a John Deere 3-pin connector, the adapter can be reused or moved between machines or attachments as needed.
Ensure the 14-pin machine-side plug is fully seated and locked, the 3-pin harness is correctly connected, and wires are properly secured. Also verify the attachment is designed for a 3-pin input — mismatched wiring formats or damaged connectors are common causes of issues.
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