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What is 12 Volt Accessory Circuit of 7-Way Normally Rated for  

Question:

How many amps can you pull from the aux power pin on a 7 way connector. Id like to run a electric heater in my trailer while it is being towed so the water lines do not freeze.

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Expert Reply:

That depends on the vehicle but typically the 12 volt accessory circuit of a 7-way is rated for 30 or 40 amps. You can verify this by checking the vehicle's fuse box for this circuit.

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Jameson C

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