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RV Battery Isolator

Posted

Does anyone know if the RV house battery isolator is integral to the truck tow electrical system on the 2001 3500 and if so where would it be located?

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  • Staff
8 hours ago, Mopar1973Man said:

Anything plugged in to the trailer connector is powered directly from the engine batteries.

 Correct, I see what he's saying now.

 

  • Staff

A continuos duty mechanical relay is what I've used for many years. They work well. Mine is switched in the cab to be able to control when the camper batteries get charged. I start my truck and usually wait till the truck batteries get replenished for awhile and then hit the switch to charge the camper batteries. Usually when I get up to highway rpm I parallel in the camper batteries to be charged via the relay.

  • Owner

Personally I like battery isolators that use 2 heavy duty diodes and wired from the alternator to the isolator the has the main battery terminal and a house battery terminals. This way your capable of getting the most from the vehicle alternator. Diode tend to last longer because there is no contacts to burn and diodes act like one way flow valves for electricity. Where a solenoid is a switch which h now could stick closed and drain both batteries. 

I used to charge the batteries in my boat through the 7 pin RV connector. 

 

It overheated the power pin though. So I added a seperate connector.

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.