Uninsulated terminals
In the truck workshop and trailer manufacturing environment, reliable electrical connections are essential at every stage of a build or repair. Uninsulated cable terminals provide the foundation for those connections. Without an insulating sleeve, these terminals offer direct access to the crimp zone, making them the preferred choice for professional wiring technicians who crimp, inspect and finish connections manually or in structured cable harness production.
Within the range of uninsulated cable terminals, flat connectors represent the most widely used type in HGV and trailer wiring. They are applied to relays, switches, fuse boxes, distribution blocks and connector housings throughout the vehicle and its superstructure. The standard tab widths of 2.8 mm, 4.8 mm and 6.3 mm correspond to the connector standards used across the European truck and trailer industry, ensuring compatibility with existing systems on both the tractor unit and the trailer.
Material selection is a deliberate technical decision in this environment. Brass is commonly used for its combination of electrical conductivity, mechanical rigidity and resistance to corrosion. For applications exposed to moisture, temperature cycling and vibration, such as underrun protection wiring on a trailer or connections within a tail lift system, a tinned finish provides additional protection. Tinning reduces contact resistance and prevents oxidation of the copper surface, extending the service life of the connection in demanding operating conditions.
Ring cable terminals in uninsulated form are used in the truck workshop wherever a bolted connection is required. Typical applications include chassis earth points, battery terminal connections and fixed mounting points on distribution rails. In trailer construction, the ring diameter must match the bolt size precisely. A loose earth connection can cause faults in lighting circuits, brake control systems or other safety-relevant systems on the trailer or HGV.
For structured cable harness production, pin connectors and AMP or TE Connectivity compatible flat connector receptacles are used in combination with the corresponding connector housings. These are designed for vibration-resistant and pull-resistant connections in automotive and HGV cable harnesses. CLICK-type terminals offer a mechanical locking feature upon insertion, reducing the risk of intermittent contact caused by incomplete seating.
In the truck workshop, uninsulated terminals are crimped with the appropriate crimping tool and then finished with heat shrink tubing or incorporated into a protected cable loom. For series production in bodybuilding or at trailer specialists with standardised wiring configurations, the uninsulated format allows fast and consistent application, with the crimp quality fully visible before the connection is covered.
Dekoff supplies uninsulated cable terminals in conductor cross-sections from 0.5 mm² to 6.0 mm², covering the full range required by professional trailer builders, bodybuilders and transport companies with in-house workshops. Whether the application involves new trailer construction, trailer refurbishment or the production of a specific cable set for a specialist vehicle, the correct terminal type is available within the range.























