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This adapter lets you run John Deere 14-pin attachments on a Caterpillar D-Series skid steer equipped with a 14-pin machine-side connector. Plug the adapter into your Cat loader, connect your John Deere attachment to the 14-pin output — power up and you’re ready to go.
It’s a fully plug-and-play solution that lets you mix attachments and machines from different brands without rewiring harnesses or cutting wires.
Machine side (Cat D-Series 14-pin): Cat’s 14-pin output supports up to six switched circuits. On this adapter, you’ll find all necessary pins installed for standard attachment control.
Attachment side (John Deere 14-pin): The adapter is wired to match John Deere’s 14-pin harness layout. It supports common functions like auxiliary Up/Down and Left/Right, plus additional switched outputs where available.
For Cat machines equipped with high-flow hydraulics (or requiring dedicated power), this adapter includes pin configurations for proper power feed. It ensures the +12 V (power) pin is included when using attachments that need it.
This adapter is perfect if you own a Cat D-Series skid steer but frequently run attachments built for John Deere’s 14-pin harness. It eliminates the need for custom wiring or complicated rewiring — making fleet or multi-brand attachment use much easier.
Always verify that your loader has the required control circuits (joystick/buttons) for the attachment to work properly. If your machine lacks certain outputs, some attachment functions may not be available.
The adapter ships ready to use — no splices, no soldering. For occasional pin maintenance or configuration changes, the included single-use tools are sufficient. If you plan frequent re-pinning or run a fleet of attachments, a commercial-duty Deutsch tool is recommended for reliability and ease-of-use.
A comprehensive user manual is available to help with wiring layout, pin-out verification, and installation guidance:
Download the Generic Machine-to-Attachment Adapter User Manual (PDF)
While the adapter is built with factory-style connector components and standard pinning, not all machines are shipped with the same factory electrical controls — especially used or second-hand units. Likewise, some attachments may have been rewired or modified. Because of this, we cannot guarantee every function will work in every situation.
Always double-check pin-outs on both the machine and attachment before applying power. If any modifications are needed, use proper Deutsch tools or consult a qualified technician to ensure safety and compatibility.
This adapter allows a Caterpillar D-Series loader with a 14-pin electrical port to operate attachments that use the John Deere 14-pin wiring standard. It converts the CAT wiring layout to match the John Deere attachment pin configuration.
It works with CAT D-Series skid steers and loaders equipped with a 14-pin port, and with attachments that use the John Deere 14-pin plug. Both machine and attachment must use the matching 14-pin connector type.
No. The adapter is fully plug-and-play. No cutting, soldering or rewiring is required. You simply connect each side to the matching 14-pin port.
The adapter supports the standard CAT D-Series 14-pin outputs, including up to six switched control functions. These signals are mapped correctly to the John Deere 14-pin side so the attachment receives the proper inputs.
Yes. Installation takes only a few seconds. Plug the adapter into the machine’s 14-pin connector, then plug your attachment’s 14-pin connector into the adapter. No tools are required.
Most attachments that follow the standard John Deere 14-pin wiring are fully compatible. Attachments requiring advanced electrical functions may depend on whether your CAT loader supports those same outputs.
Yes. The adapter is built with heavy-duty connectors and sealed wiring designed for rugged outdoor use, vibration, moisture and frequent attachment changes.
Yes. As long as the loader has a CAT 14-pin machine-side port and the attachment uses a John Deere 14-pin plug, you can move the adapter between different machines and tools.
Check that both connectors are fully seated, verify that the attachment uses the correct 14-pin John Deere wiring, and ensure your CAT machine has the required control functions enabled. Improper pin alignment or unsupported functions can cause issues.
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