Two batteries in one vehicle.


Old 02-13-02, 11:37 AM
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Two batteries in one vehicle.

I need to know how to connect two batteries in one
vehicle. (truck ford 390 eng.) looks like it was in at one time but now it's disc. does anyone got a diagram on this type of project..
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Old 02-13-02, 11:58 AM
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Year of subject vehicle?

Get a hold of a wiring diagram for it or have the dealership print you out the exploded view from the parts book so you'll have an idea where it all goes.
Old 02-13-02, 01:24 PM
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1973-ford f-250 it look to me after market set up.
Old 02-13-02, 01:38 PM
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I'm not familiar with that vehicle, but it all depends on what you want to accomplish. If you want to keep the same 12V system, but double the capacity then you put them in parallel. If you want to move up to a 24V system, and keep the same capacity then you put them in series, just like a flashlight, or radio.
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