ISO 3732:1982 Road vehicles; Electrical connections between towing vehicles and trailers with 6 or 12 V electrical equipment; Type 12 S (supplementary)
2003ISO 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
1997ISO 3732:1997 Road vehicles - Electrical connections between towing and towed vehicles with 12 V systems - 7 pole connector type 12 S (supplementary)
1982ISO 3732:1982 Road vehicles; Electrical connections between towing vehicles and trailers with 6 or 12 V electrical equipment; Type 12 S (supplementary)
1976ISO 3732:1976 Title missing - Legacy paper document