**IMPORTANT:** If the GNSS receiver does not provide terrain compensation, an IMU must be installed to maintain accuracy.
## Parts Required - **BPF11284 - **Front Extension Harness (10m) - **PF81137 - **Implement Pigtail Terminator Wiring Harness - **T3H-S001** - COMMAND Impl Adapter – Stub Junction - **T3H-G001 / T3H-G007** - COMMAND NMEA Extension Harness (8m or 12m) - **Custom GNSS Adapter** - Custom adapter for connection of the NMEA 0183 Serial compatible receiver to the **T3H-S001** and **T3H-G001/G007** adapters. ## Connection Process 1\. Connect the John Deere Front Extension Harness to the ISOBUS breakway connector. 2\. Route along the implement, allowing slack at pivot points and avoiding snag hazards. ****3. Connect the **T3H-S001** adapter to the Front Extension Harness. **[](https://docs.t3rra.com/uploads/images/gallery/2025-07/szCk65qzjfDIekAM-image.png)** 3\. Connect the **PF81137** Implement Pigtail Terminator to the Implement Receiver Wiring Harness and secure the terminator to the implement receiver wiring harness. [](https://docs.t3rra.com/uploads/images/gallery/2025-07/xGDljli6p8S80NtF-image.png) 4\. Connect the **CUSTOM** adapter to the **T3H-S001** adapter. 5\. Connect the **CUSTOM** adapter to the receiver's port ensuring connector keys are lined up. 6\. Connect the NMEA extension harness **T3H-G001** or **T3H-G007** to the **CUSTOM adapter, then connect the other end to the **T3H-C005** external breakout harness. ## Receiver Configuration Perform necessary setup of the GNSS receiver using provided manufacturer tools or programs: - - Talker ID should be set to GP or GN - Messages enabled - GGA, GSA, VTG - Output Update rate - 10Hz recommended - Baud Rate - 38400 **Verify:** \- Receiver powers on