Activating 12-Volt Accessory Circuit to 7-Way on 2004 Chevy Silverado 2500

Question:

Where is the connection on the truck to provide the auxillary power to charge my trailer battery? I have the seven flat blade rv style plug.

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Expert Reply:

The pin in the 1:00 position on your 7-way is fed by the auxiliary power circuit. The wire feeding that circuit runs to the engine compartment and terminates under the brake booster and master cylinder and will have a ring terminal on the end of it. The ring terminal will connect to the front power post on the fuse box under the hood. A 40 amp fuse will need to be installed in the location closest to the power post to activate the circuit.

I have edited a photo for you showing the fuse box and the fuse and wire connection location. I have also linked you to some FAQ articles that you might find helpful.



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expert reply by:
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Michael L

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