Terex
Seat harness for Terex PT30
This seat harness connects operator seat sensors and controls to the main electrical system of the Terex PT30 compact track loader. It ensures correct communication between the operator presence sensor and machine safety systems.
Parts diagram
Compatible models
Specifications
- Part number
- 0304-662
- Brand
- Terex
The seat harness, part number 0304-662, serves as the electrical interface for the operator seat assembly within the Terex PT30 compact track loader. It establishes the necessary electrical connections between seat-mounted components, such as the operator presence sensor and adjustment switches, and the machine main electrical system. By transmitting signals between these points, the harness enables the integration of seat-based inputs into the broader machine control architecture.
This component is specifically engineered for the chassis assembly of the Terex PT30. It facilitates the operation of safety interlocks, such as function lockout systems that depend on accurate detection of the operator position. Proper installation of this harness ensures that electrical signals reach the control modules without interruption, supporting the intended functionality of the equipment safety features.
In heavy machinery, a seat harness acts as a bridge for low-voltage signals that govern operator-related safety protocols. These harnesses are routed through the chassis to accommodate the movement and positioning of the seat while maintaining continuous electrical conductivity between the cabin controls and the machine electronic control units.

