How to Charge a Trailer Battery with a Vehicle with a 4-way
Question:
Hey, I have a 2013 Subaru Outback and 2011 Little Guy Silver Shadow Trailer. The trailer has lights, fans, brake lights, and battery. I believe the cable that hooks up to the trailer is a 7-Way connector. If I get the 4 Way OEM part for my suabru then a 4 way to 7 way adapter. Will it charge the trailer battery and work with the brake lights? Thanks!
asked by: Thomas F
Expert Reply:
To charge the battery on your trailer that has a 7-way with your 2013 Subaru Outback that has a 4-way on it currently you can use the # 37185 that you referenced, but you will need to run the black wire of the adapter up to the battery with 10 gauge wire like part # 10-1-1 (sold by the foot) through a 40 amp breaker like part # 9510.
This will activate the circuit required to charge your trailer battery.
I attached a video that covers how to install a brake controller in a similar vehicle as yours, you would want to skip the part about installing the brake controller but there is a section of the video that shows how to run the charge wire.
Products Referenced in This Question
40 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
- Accessories and Parts
- Wiring
- Circuit Breaker
- 40 Amp
- Pollak
more information >
Product Page this Question was Asked From
Adapter 4-Pole to 7-Pole and 4-Pole
- Trailer Wiring
- Wiring Adapters
- Multi-Function Adapter
- 4 Flat
- Plug and Lead
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
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