Question:
I want to charge the Aux 12 volt battery on my trailer. Which wire do I use on my 2001 ford f 350. Is it the #4 pin?
asked by: bob w
Expert Reply:
Yes, you will use the number 4 pin on your 7-way connector, item # PK12703, which may also be labeled Red. The normal attachment is a Black 10 gauge wire to this connection for charging the trailers battery and powering 12 volt accessories.
Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End
