Power wire in trailer plug?

[willy1947]

I haven't checked yet (been too cold ), but the trailer wiring on that comes with the tow package, already has the "power" wire hooked up, right?



I have an enclosed trailer that I added a living quarters too. I added a deep cycle battery to the trailer so that when it wasn't hooked up to the truck I would have power for my lights and small converter. However, when I it is hooked up I am assuming the truck should be charging that battery. It was on my old one, but I wired it myself. I just matched the plug to the factory wiring diagram.



The wiring on the trailer and truck are stock. The truck is an 04.



I do realize that if I leave the truck hooked up, that there is some drain from the truck batteries, unless I unplug the trailer. They are never connected for more than about 2 days without being started. So, so far there hasn't been any issues. I also, charge the trailer battery before every trip, so that it starts fully charged.



Thoughts?



Dave

 

[sfr1047]

Trailer B+

I assume you are talking about the 7 pin trailer plugin on the rear bumper. When you lift the cover the top right pin should be 12 volts to the trailer battery. My cover has a diagram imprinted on it. It should be hot. Check it with a volt meter.

 

[willy1947]

Thanks! I assumed it probably was. I just haven't taken the time to check it. I thought of it today and just thought I would post the question. Thanks!



Dave

 

[klenger]

Here's a drawing of the 7 pin connector pinout



http://www.klenger.net/dodge/2nd-gen-reference/trailer-connector-wiring.pdf

 

[JRG]

Does this then mean that you CAN run an extention from that plug to the camper pig-tail up front. Then use the flat 4 underneath for the boat trailer?



JRG

 

[Casey Balvert]

Originally posted by JRG

Does this then mean that you CAN run an extention from that plug to the camper pig-tail up front. Then use the flat 4 underneath for the boat trailer?



JRG

That IS what it means.