I am swapping an electric/hydraulic dump rack body from one truck to another. The old truck has dual batteries mounted on the frame rail behind the cab. These run both the truck & the dump body. The new truck (2006 F-350 cab/chassis) has a single battery under the hood. If I mount a second battery on the frame rail behind the cab to run the hydraulics can I just run a second wire from the alternator to the + on the second battery to keep it charged? The + would then go to the hydraulics & the - to ground. One battery for truck & one for dump body.
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truck electrical battery question