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Spiral Coils

As part of our trailer connectors lineup, we offer a variety of spiral coils used for connecting a truck and trailer on commercial vehicles. Our truck-to-trailer electrical connector cables include 7-pole trailer connector cables, 15-pole trailer connector cables, 5-pole ABS trailer cables, and 7-pole EBS emergency trailer brake cables. Offered in Hytrel® (TEEE) or polyurethane (TPU) sheath, our spiral coil cables conform to ISO 4141 and are available in various turn diameters. Explore our portfolio of spiral coils to find the right one for your application.

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Frequently Asked Questions

What are spiral coils?

Spiral coils are specialized cables with connectors that are used for electrically connecting a truck tractor and a semi-trailer. They are available for connecting lighting and accessories as well as for use in battery charging, ABS, and EBS applications.

How do spiral coils work?

Spiral coils electrically connect the components in a truck tractor with components in a semi-trailer. Littelfuse spiral coils are protected by either a Hytrel® (TEEE) or polyurethane (TPU) sheath and conform to ISO 4141. They are pre-assembled with electrical connectors to eliminate the time, cost, and complications of terminal assembly and installation.