How to Charge a Trailer Battery Using a 4-Way Trailer Connector
Published 08/31/2018
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Question:
I have a 7 way plug on my truck. the trailer is a flat 4 wire. I use the adapter 7 way to flat 4 to get trailer lights to work. my question I want to charge a battery on the trailer . whats the best way? should I use the side marker lights to charge the battery or is there an adapter or a simpler way
asked by: Aaron
Expert Reply:
The best way to maintenance charge the 12 volt auxiliary battery on your trailer would be to upgrade to a 7-way trailer connector. For this, I recommend using the Trailer Wiring 7-Way Upgrade Kit part # HS381-9000. The 12 volt hot lead (black wire) that feeds into the trailer connector will need to connected to the positive post on the battery and will work to provide a maintenance charge. However, if you need to provide an actual charge then you will need to use a battery charger instead like the Redarc BCDC Dual Battery Charger part # 331-BCDC1240D.
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Wiring Kit for Hydrastar Electric Over Hydraulic Actuators
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- Disc Brakes
- Hydraulic Drum Brakes
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- Hydrastar
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