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This adapter lets you use CAT, Terex or ASV attachments that use an 8-pin electrical harness on a loader equipped with a 14-pin John Deere electrical output. Plug the 14-pin end into your John Deere loader, connect the 8-pin side to your attachment, power up the machine — and your attachment is ready to run. It’s plug-and-play compatibility in a simple, easy-to-use adapter.
The John Deere 14-pin output provides 6 switched ports, but CAT/ASV/Terex 8-pin attachments support only 4 switched ports. This adapter comes with 5 pins installed and delivers the following functions:
That limitation comes from the attachment’s wiring standard — the adapter simply matches wiring so you don’t have to rewire your attachment.
The 8-pin side of this adapter is wired for standard CAT/ABC-Series attachments (pins A, B, C, D, E, H). If you’re installing it on an ASV attachment, you must move Pin H to Pin G to ensure full functionality. The kit includes tools for this pin relocation and installation instructions.
Simple plug-in installation — no cutting or splicing required. Once installed, your loader’s factory controls will operate the attachment as intended. Because this is a wiring-standard adapter, you don’t lose functionality when switching attachments, and wiring remains intact.
The adapter ships with basic terminal tools, suitable for occasional pin adjustments or one-time setup. If you plan frequent re-pinning, maintenance, or run multiple attachments, consider a commercial-duty Deutsch tool for reliability and ease of work.
A generic adapter manual is available to help with installation, wiring, and compatibility checks:
Download the Generic Machine-to-Attachment Adapter User Manual (PDF)
This adapter is built using factory-style Deutsch components and pinned according to standard wiring. However, because many attachments — especially second-hand or auction-purchased units — may have altered wiring, and because machine electrical options can vary, we cannot guarantee universal compatibility.
Always verify pin-outs on both machine and attachment before applying power. Use the tools provided or a proper Deutsch tool for pin adjustments. If you’re unsure about wiring or compatibility, consult a qualified technician before use.
This adapter allows you to hook up an 8-pin CAT, Terex or ASV style attachment to a loader that uses the John Deere 14-pin machine-side electrical system. It converts the 14-pin output into the appropriate 8-pin wiring for the attachment.
It is compatible with loaders that have a John Deere-standard 14-pin electrical output and attachments built for CAT/Terex/ASV 8-pin connectors. Before ordering, confirm that your attachment uses the 8-pin standard wiring.
The adapter supports the standard 4 control pins that CAT/Terex/ASV 8-pin systems provide — enough for basic functions like Up/Down and Left/Right control. Because you’re adapting from a 14-pin output, the extra pins are unused or redundant for 8-pin attachments. :contentReference[oaicite:5]{index=5}
Yes — installation is plug-and-play. Plug the 14-pin end into your John Deere loader, and plug the 8-pin connector from your attachment into the adapter’s output. No rewiring or modifications required. :contentReference[oaicite:6]{index=6}
Yes — because CAT/Terex/ASV 8-pin systems have fewer control circuits than a full 14-pin system, some attachments with advanced wiring requirements may not function fully. You might be limited to basic functions depending on the attachment’s design. :contentReference[oaicite:7]{index=7}
No — this adapter is passive and plug-and-play. It does not require modifications to the loader’s wiring harness or electronic system. It simply adapts the connector type and wiring pinout for compatibility. :contentReference[oaicite:8]{index=8}
Yes — the adapter uses connector hardware designed for rugged, job-site conditions. When properly connected, it maintains secure electrical contact suitable for typical skid steer attachment use. :contentReference[oaicite:9]{index=9}
Yes. As long as the machine uses a John Deere-style 14-pin port and the attachment uses a CAT/Terex/ASV 8-pin connector, you can unplug and reuse the adapter with different machines or attachments. :contentReference[oaicite:10]{index=10}
Ensure both connectors are fully seated. Confirm that your attachment uses the proper 8-pin standard, and that the adapter is wired correctly. Some attachments may require functions not supported by 8-pin wiring, which can cause partial or no operation. :contentReference[oaicite:11]{index=11}
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