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Old 09-05-2016, 08:42 PM   #1
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Battery charging via truck

My crusader 270RET has a brand new battery installed and went dead pretty fast when we opened up the camper at home. Can someone tell me if my truck should charge the batt. while driving on the road?
I started my truck up and nothing still worked on 12 volt in the camper.
Thanks,any help would be great.
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Old 09-05-2016, 08:48 PM   #2
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Most tow vehicles will only provide a trickle charge while driving.
It would take hours of driving to recharge a depleted battery.
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Old 09-05-2016, 08:58 PM   #3
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I thought that at least a light would work with truck running. My 2003 dodge has a 12 hot wire in the main plug for aux. batt. on a trailer. Does that wire go directly to the camper batt. ?
Is there a wiring diagram available for the crusader 270RET?
thanks.
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Old 09-05-2016, 08:58 PM   #4
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Good video here:

https://youtu.be/FboDyLjn5sg

Many more also on youtube.


BTW, an inexpensive digital voltmeter (or multimeter) is a basic tool for any electrical system testing or diagnosis.

Quote:
Originally Posted by neal View Post
I thought that at least a light would work with truck running. My 2003 dodge has a 12 hot wire in the main plug for aux. batt. on a trailer. Does that wire go directly to the camper batt. ?
Is there a wiring diagram available for the crusader 270RET?
thanks.
Follow the wiring from the truck. Test the truck battery voltage with the engine running. As you follow the wiring, you should be within a few tenths of a volt that is showing at the truck battery. If you find a sudden drop at some point, you have found the problem area.
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Old 09-05-2016, 10:24 PM   #5
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Quote:
Originally Posted by neal View Post
Is there a wiring diagram available for the crusader 270RET?
thanks.
No
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Old 09-05-2016, 11:09 PM   #6
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thanks for the clarification, I will check those items.
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Old 09-06-2016, 06:20 AM   #7
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You can turn your lights on your truck and that will put a little more power to your battery


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Old 09-06-2016, 07:08 AM   #8
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You have 1 charging wire from your TV to the plug and also in the plug you have 12v hot from your TT and a ground if it's a 7 pin plug, just went through all this myself. If you keep a load on like suggested it will help keep the amps up going to the TT battery other then that once it reads your TV voltage it will drop down and get what I call only a trickle charge at best back to your TT. If you can keep the voltage output to about 14v then you would shorten the time it takes, only way I know of is to turn your headlights on I'm surely not a mechanic, but that is what I found, If I'm wrong I'm sure there's a few people on here that will correct my statement. Sorry I can't be of more help...
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Old 09-06-2016, 07:20 AM   #9
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Neal, you don't really say if you've checked for battery voltage at the truck
socket. Some trucks require the installation of a fuse in order to make the
battery lead "hot" at the socket.

While the trailer battery probably won't get much of a charge from the
truck it definitely should power the lights in the trailer if the trailer battery
is low. I've plugged my truck back in many times to carry on when my
trailer was getting low.

Take a look her to see which pin is ground and which is 12v plus--
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Old 09-06-2016, 07:24 AM   #10
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Just saw the make of truck, following information does not relate to that vehicle.
I know for a fact that late model GM trucks (at least 2013 and later I know for a fact) will increase the output to the trailer from a possible 12.5-13.1V, in what they call a fuel economy mode where the generator output is very low, to a 13.9-14.5V if the headlamps are turned On, or in Tow Haul Mode (if equipped).
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