Description
The 12S connector on a car or towing vehicle supplies the supplementary power required by the caravan/trailer reversing lights, interior lights, battery charger and fridge.
There is a socket on the vehicle and a plug on the caravan/trailer.
The 12s cable is seven core with a grey outer sheath.
The seven wires should be around 1.5mm² with a larger white earth wire at 2.5mm².
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