question about factory dual batteries 2006 F350 diesel

[proper4wd]

My truck is factory equipped with dual batteries. I can not find anywhere on the web that explains how they are connected so I imagine that they are not "managed" in any way.

I'd like to wire up my winch. I'm not convinced that its a great idea to hook both the positive and negative winch cables onto just one battery... anybody have any ideas?

 

[nely]

The batteries are constantly wired together in the diesel ford trucks. When you hook the winch wires to either battery, both batteries will power the winch.

Sent from my SGH-T959 using Tapatalk

 

[proper4wd]

Cool thanks for the info. I'm concerned that a massive draw on one battery will overload the wiring connecting them together when the load equalizes between them. Any insight?

 

[Stoney126]

With the truck running I believe your Alt. Will be doing the brunt of the work and dipping into the battery when it needs to. I would think the draw of the winch wouldn't be to taxing on the system considering the draw the starter takes.

 

[proper4wd]

Thats a good point I didnt consider the draw of the starter. Is that wired with just one positive lead from one battery? I could go check but its awfully dark outside...

 

[brussum]

As already mentioned, the batteries are wired in parallel, so they should share the load. I always run the engine when using the winch so as to avoid a heavy drain on my starter batteries. In the perfect world, I'd have a separate bank of isolated batteries for the winch and other accessories, but there's only so much room under the hood.