I am seeking information about a dual battery switch unit.
Need to know how to use it correctly.
See image.

 

That's a mess. Where is the other battery located?

 

The top is On- Off, and the bottom is the circuit breaker. Close the breaker and turn to on to charge the second battery.

 

Appreciate your question, but it's irrelevant.

I simply need to know how the switching unit operates.

 

Thanks.
To be clear, the red key is on and off?
Which position for the key is on or off?
Which position on the circuit breaker is open or close?
Do you know what positions provide for charging both batteries?
And, what positions provide for cranking the motor to start from the spare battery?

 

You are the one who asked for help, none of these trucks had a second battery. How are we supposed to know the direction the wires are running. If you find the question irrelevant then go figure it out for yourself and don't bother here.

 

Does anyone know the make and model of the dual battery switching unit shown in the photo?

I am hoping that a user manual is somewhere on the web.

 

Commenting on the condition of the unit, does nothing to answer the question, nor does asking an irrelevant question to answer a question do anything to answer the original question.

 

Again without more information we can't help you! You are asking for a manual? Clearly that is a cobbled together install with a homemade bracket. There isn't going to be a manual, those are basic off the shelf parts. You would be better off getting a multimeter and testing it yourself.

 

Thanks.

The unit is a manufactured unit.
Over the years, I have seen this same unit in other vehicles, here in Oz.

 

Welcome to FTE. It's the beginning of winter & just past a contentious election & lots of folk are in a crappy mood...

Or at least it's what you can write it off as.

If you have no luck here, you might try one of the diesel, electrical or even the international forum.

Good luck & stick around.

 

Thanks.
Your positive reply is appreciated.

 

Might you know of any brand names for these off the shelf parts?

 

You're welcome. Also one of the camping/rv forums here might have a clue as well.

That vinyl covered frame (looks dipped) is not a home made item, Can you look under it for a name or logo?

 

That's not a dual battery switch. It's two separate items mounted on a common base plate.

At the top is a battery isolator switch. A dozen companies make a similar unit. Here's a link to one just like yours...

https://www.waytekwire.com/item/4407...EaAj-yEALw_wcB

Turned clockwise the battery is in-circuit, and the 'key' cannot be removed. Turned anti-clockwise the battery is isolated and you can lift the key straight out and put it in your pocket.

The bottom item is a resettable circuit breaker. Again, several companies make one, here's a link to one just like yours.


Neither of these items will select one or both batteries. From what I can see of where the wires are connected, there are wires going to two batteries, connected in parallel. This would make them both hot at the same time. If you have a switch to select/deselect a second battery, it's elsewhere.

I have an RV that has a 'chassis' battery under the hood, and 'house' batteries at the rear. Wires from the house batteries connect to the top of the chassis battery, but the hot wire is isolated from the chassis battery by a solenoid switch when the engine is off. Pressing a "Battery Boost" button on the dash activates the solenoid, connecting the house batteries to the chassis battery to enable you to use the house batteries to help start the rig if the chassis battery is flat. When the engine is running the solenoid also gets power, enabling the alternator to charge the house batteries as well as the chassis battery.

Hope this helps.

Richard