ISO 3731:2003 Preview
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
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
ISO 3731:2003 specifies the dimensional characteristics of, and specific requirements for, 7-pole connectors of type 24 S and their contact allocation for the electrical connection of towing and towed vehicles with 24 V nominal supply voltage, thus ensuring interchangeability. A 24 S connector is intended to be used in addition to a 24 N connector according to ISO 1185 where more than 7 poles are required.
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