ISO 1724: The international standard for 7-pin trailer connectors
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/TC 22/SC 3: Amazon.com: Books
ISO 1724: The international standard for 7-pin trailer connectors
7-pin 12V trailer connectors according to ISO 1724 – Type N
Trailer Plug 7-Pole 12V ISO 1724 Towbar Caravan Connector NEW BOSCH 0352170003 | eBay