Towing, which socket to use? - AULRO.com
2010-2-2u2002·u20022,248. I've just wired up my caravan for towing with the D3, so maybe I can help. Firstly, if you don't need to send power to the trailer (via main or aux battery), then just use the black socket (on the right, looking at the back of the vehicle). Most car accessories shops will sell you an adapter to fit your trailer plug - Repco definitely do!
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