Customer Service:
Mon - Fri: 8:30 am - 6 pm EST

Electrical Connectors and Electrical Towing Connections

Electrical Connection standards for road vehicles focus on the dimensional characteristics of both on-board and towing electrical connectors. Also addressed in some standards are electrical characteristics, contact allocation, performance requirements, tests, and test requirements. Additionally, the interchange of digital information is covered by the ISO 11992 as it uses the electrical towing connections.

 Connectors
 Electrical Towing-Specific Connections

Connectors

ISO 16844-1:2013

Road vehicles - Tachograph systems - Part 1: Electrical connectors

ISO 16844-2:2011

Road vehicles - Tachograph systems - Part 2: Electrical interface with recording unit

ISO 20860-1:2008

Road vehicles - 50 ohms impedance radio frequency connection system interface - Part 1: Dimensions and electrical requirements

SA TR IEC 60783:2014

Wiring and connectors for electric road vehicles (FOREIGN STANDARD)

SAE J 1742-2010 (SAE J1742-2010)

Connections for High Voltage On-Board Road Vehicle Electrical Wiring Harnesses~Test Methods and General Performance Requirements

SAE J 2223-1-2011 (SAE J2223-1-2011)

Connections for On-Board Road Vehicle Electrical Wiring Harnesses~Part 1: Single-Pole Connectors~Flat BladeTerminals~Dimensional Characteristics and Specific Requirements ( Stabilized: Dec 2011 )

SAE J 2223-3-2011 (SAE J2223-3-2011)

Connections for On-Board Road Vehicle Electrical Wiring Harnesses~Part 3: Multipole Connectors~Flat Blade Terminals~Dimensional Characteristics and Specific Requirements ( Stabilized: Dec 2011 )

ISO 8092-1:1996

Road vehicles - Connections for on-board electrical wiring harnesses - Part 1: Tabs for single-pole connections - Dimensions and specific requirements

ISO 8092-2:2005

Road vehicles - Connections for on-board electrical wiring harnesses - Part 2: Definitions, test methods and general performance requirements

ISO 8092-3:1996

Road vehicles - Connections for on-board electrical wiring harnesses - Part 3: Tabs for multi-pole connections - Dimensions and specific requirements

ISO 8092-4:1997

Road vehicles - Connections for on-board electrical wiring harnesses - Part 4: Pins for single- and multi-pole connections - Dimensions and specific requirements

ISO 4165:2001

Road vehicles - Electrical connections - Double-pole connection

ISO 9534:1989

Road vehicles - Fuel pump electric connections

ISO 15031-3:2016

Road vehicles - Communication between vehicle and external equipment for emissions-related diagnostics - Part 3: Diagnostic connector and related electrical circuits: Specification and use

ISO 15170-1:2001

Road vehicles - Four-pole electrical connectors with pins and twist lock - Part 1: Dimensions and classes of application

ISO 15170-2:2001

Road vehicles - Four-pole electrical connectors with pins and twist lock - Part 2: Tests and requirements

Electrical Towing-Specific Connections

ISO 11446-1:2012

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

ISO 11446-2:2012

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Part 2: 13-pole connectors for vehicles with 12 V nominal supply voltage intended to cross water fords

ISO 13044-2:2021

Road vehicles - Fully automatic coupling systems 24 V (FACS) for heavy commercial vehicle combinations - Part 2: Electrical and pneumatic interface for 50 mm fifth wheel couplings

ISO 11992-1:2019

Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 1: Physical and data-link layers

ISO 11992-2:2014

Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 2: Application layer for brakes and running gear

ISO 11992-3:2021

Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 3: Application layer for equipment other than brakes and running gear

ISO 11992-4:2014

Road vehicles - Interchange of digital information on electrical connections between towing and towed vehicles - Part 4: Diagnostic communication

ISO 12098:2020

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 15-pole connector for vehicles with 24 V nominal supply voltage

ISO 1724:2003

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 7-pole connector type 12 N (normal) for vehicles with 12 V nominal supply voltage

ISO 25981:2020

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Connectors for electronically monitored charging systems with 12 V or 24 V nominal supply voltage

ISO 3731:2003

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 7-pole connector type 24 S (supplementary) for vehicles with 24 V nominal supply voltage

ISO 3732:2003

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 7-pole connector type 12 S (supplementary) for vehicles with 12 V nominal supply voltage

ISO 4091:2003

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Definitions, tests and requirements

ISO 7638-1:2018

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Part 1: Connectors for braking systems and running gear of vehicles with 24 V nominal supply voltage

ISO 7638-2:2018

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - Part 2: Connectors for braking systems and running gear of vehicles with 12 V nominal supply voltage

ISO 1185:2003

Road vehicles - Connectors for the electrical connection of towing and towed vehicles - 7-pole connector type 24 N (normal) for vehicles with 24 V nominal supply voltage

ISO 4009:2000

Commercial vehicles -- Location of electrical and pneumatic connections between towing vehicles and trailers

ANSI Logo

As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

Useful Links
CUSTOMER SERVICE
NEW YORK OFFICE
ANSI HEADQUARTERS
2024 © American National Standards Institute (ANSI) All Rights Reserved.