Using Auxiliary Pin On 7 Way Connector To Charge Boat Battery
Updated 08/25/2021 | Published 06/06/2021
Question:
Im wanting to keep a trickle charge on my boat while driving. Going from the 12 volt wire on the 7 pin trailer plug, do I just need the hot wire to the boat battery or do I need a ground wire to the boat battery also.
asked by: Robert M
Expert Reply:
You can in fact use the 12v accessory circuit on your vehicles 7 way connector to maintain your boat's battery while driving. The 12v accessory circuit is located at the 1'oclock position on your vehicles 7 way. Using # 10-1-1 you would run from the 7 way to the positive terminal on the the boats battery, and the negative would ground to the trailer frame.
To note, the 10 gauge wire # 10-1-1 is sold by the foot.
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