GB/T 20718.2-2025Road vehicles - Connectors for the electrical connection of towing and towed vehicles (13-pole) - Part 2: 13-pole connectors for vehicles with 12 V nominal supply voltage intended to cross water fords (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents".

This document is Part 2 of GB/T 20718.GB/T 20718 has issued the following parts.

- Road vehicles - Connectors for the electrical connection of towing and towed

vehicles - 13-pole connector for vehicles with 12 V nominal supply voltage;

- Road vehicles - Connectors for the electrical connection of towing and towed

vehicles (13-pole) - Part 2.13-pole connectors for vehicles with 12 V nominal

supply voltage intended to cross water fords.

This document is identical to ISO 11446-2.2012 "Road vehicles - Connectors for the

electrical connection of towing and towed vehicles (13-pole) - Part 2.13-pole

connectors for vehicles with 12 V nominal supply voltage intended to cross water fords".

This document has made the following minimal editorial changes.

- In order to coordinate with the existing standards, the standard name is changed to

"Road vehicles - Connectors for the electrical connection of towing and towed

vehicles (13-pole) - Part 2.13-pole connectors for vehicles with 12 V nominal

supply voltage intended to cross water fords";

- The order of water influence test and water immersion test in 6.2.3 of ISO 11446-

1 Scope

This document specifies the dimensions, application, tests, and requirements for 13-

pole connectors for the electrical connection of towing and towed vehicles with 12 V

nominal supply voltage and intended to cross water fords, as well as the requirements

for the park sockets for storing the plug when the plug and socket are disconnected.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

ISO 1103 Road vehicles - Coupling balls for caravans and light trailers - Dimensions

NOTE. GB/T 25980-2010 Road vehicles - Coupling balls for caravans and light trailers -

Dimensions (ISO 1103.2007, IDT)

ISO 4091 Road vehicles - Connectors for the electrical connection of towing and

towed vehicles - Definitions, tests and requirements

NOTE. GB/T 5053.3-2006 Road vehicles - Connectors for the electrical connection of towing

and towed vehicles - Definitions, tests and requirements (ISO 4091.2003, IDT)

ISO 4141 (all parts) Road vehicles - Multi-core connecting cables

NOTE. GB/T 5054.1-2024 Road vehicles - Multi-core connecting cables - Part 1.Test methods

and requirements for basic performance sheathed cables (ISO 4141-1.2019, MOD)

GB/T 5054.2-2024 Road vehicles - Multi-core connecting cables - Part 2.Test methods and

requirements for high performance sheathed cables (ISO 4141-2.2019, IDT)

GB/T 5054.3-2024 Road vehicles - Multi-core connecting cables - Part 3.Construction,

dimensions and marking of unscreened sheathed low-voltage cables (ISO 4141-3.2019, IDT)

GB/T 5054.4-2024 Road vehicles - Multi-core connecting cables - Part 4.Test methods and

requirements for coiled cable assemblies (ISO 4141-4.2009, MOD)

ISO 11446-1 Road vehicles - Connectors for the electrical connection of towing and

towed vehicles - Part 1.13-pole connectors for vehicles with 12 V nominal supply

voltage not intended to cross water fords

3 Terms and definitions

For the purpose of this document, the terms and definitions defined in ISO 4091 apply.

4 Dimensions

The dimensions of plugs, sockets, and park sockets shall comply with the provisions of

ISO 11446-1.Details not specified in this document are left to the discretion of the

manufacturer. When the plug and socket are engaged, the contacts shall be floating and

shall be able to align with the reference position.

5 Application of connectors

1103 and ISO 11446-1.