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Old 03-12-2011, 05:08 PM   #29
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Originally Posted by wingnut60 View Post

I believe all newer trucks are set up so that the truck batteries CAN NOT be drained by a trailer through the harness--electricity can ONLY flow from the truck to the trailer (diode? in line). Also, battery charge line not live unless truck is running.
Usually a relay that only allows the circuit to be active when the ignition switch is in the run position.

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Old 03-12-2011, 05:16 PM   #30
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Originally Posted by wingnut60 View Post
I hope your Dodge dealer is much better than most--I haven't run across any service advisors (I am a Ford guy) who knew anything about towing, trailer hookups, etc., unless they are trying to deny a warranty claim due "to towing too much load" or some such deal.
This forum and others like it can be a better source of information, particularly other Dodge owners.
You're most likely right, Joe, but I deal with one particular guy and thought I could ask him-I honestly think he would tell me the truth. He laughed when he knew I was pulling a 21 ft Feather Lite with the big truck! Maybe that's naive of me. At the same time, I do place more credence in what people in this forum say (an I also know what questions to ask)-I was just going to verify that my 2004 Dodge (thank you, Rusty-worked like a charm) would be okay with the inverter and get Dodge to put it in writing. As far as looking in the manual, it says to change my oil every 7500 miles. At Dodge and almost everyone I know who owns a truck says between 3-4000 no matter what the manual says.

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Old 03-12-2011, 07:09 PM   #31
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Originally Posted by rray32539 View Post
Usually a relay that only allows the circuit to be active when the ignition switch is in the run position.
As I posted earlier, Dodge doesn't use a battery isolation relay - the +12VDC feed to the trailer plug is hot at all times. The OP has a Dodge.

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Old 03-12-2011, 07:48 PM   #32
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I have a 1500 watt mounted under my drivers seat. I use a solenoid and toggle switch to activate the power to it, that way it is only on when I need it to be. I use it to run my small 120 volt air compressor in the tool box in the bed of the truck.

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