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Old 03-26-2014, 01:57 AM   #1
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no battery charge while driving

Hi, I have a 2003 Salem t23 travel trailer. The batteries are not charging while driving, but do charge when camper is plugged in. I'm not sure where to start. Ideas?
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Old 03-26-2014, 02:45 AM   #2
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I'd check the wiring on the plug to the TV. Maybe look for corrosion on the plug itself. Once, I didn't have mine pushed in correctly. I had all the lights, but no power to the 12v refer when traveling.
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Old 03-26-2014, 06:57 AM   #3
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Look at your tv-----------

Look at your TV for the problem. I pulled a 26' TT for a year up & down the road thinking my batteries were being charged. I had purchased a 2005 F-150
used with 28K miles on it, Installed a hitch in the bed for my 5th wheel thinking all was OK with the plug-in for the RV. We were on a pretty long trip
before stopping for the night, took a little longer than usual to get the 30 amp 120 volt supply hooked up. Discovered the battery was not being charged while being towed. When F-150 was purchased new, someone failed to install the towing relay for the 12 volt charging & supply to the camper.
Purchased a 12 VDC relay from Auto Zone, plugged in under the hood.
Charging system never worked so good after 18 months of towing.
Use a 12V light or volt/ ohm meter to measure the 12 Volt pin in the trailer plug in the truck or TV with the key switch on. If you have 12 VDC at the pin on the TV, look at the camper for a re-settable relay for your problem.
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Old 03-26-2014, 07:42 AM   #4
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Above statement correct.
Ford uses a relay.
Gm uses a fuse.

If the tow charge wire was never energized via a fuse or relay it still isn't.

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Old 03-26-2014, 09:24 AM   #5
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And if you have a newer GM pickup, make sure the wire is connected to the post, at the front of the fuse distribution center under the hood. They ship it to the dealer just hanging down in the wiring bundle. That's the way my 2013 was delivered.
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Old 03-26-2014, 09:32 AM   #6
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Quote:
Originally Posted by f5moab View Post
And if you have a newer GM pickup, make sure the wire is connected to the post, at the front of the fuse distribution center under the hood. They ship it to the dealer just hanging down in the wiring bundle. That's the way my 2013 was delivered.
Good point.

That info is in the owner's manual as well.

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Old 03-26-2014, 01:24 PM   #7
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Yes, but they do not tell you which wire to connect to which post. There are two red wires, and two posts (of different diameter). One wire is for the aftermarket brake controller and runs under the dash; the other is the wire to the 7-pin at the rear.
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Old 03-26-2014, 02:20 PM   #8
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Not entirely true.


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Old 03-26-2014, 02:21 PM   #9
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This.


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Old 03-26-2014, 05:39 PM   #10
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Actually, what I said was true for my Silverado ("they do not tell you which wire to connect to which post"). May be different for other people.

On my vehicle, both wires were tied off in the same location, with NO tags as to which was which. So, I just connected both wires to the two separate threaded studs and retained in place with some electrical tape. The tape lasted for a few days and a few hundred miles until I came across a hardware/auto parts store. (NO nuts on the posts.)

However, that's a nice photo.

I should have checked before leaving on the trip, but I didn't and believed the dealer's tech when he said he had connected the power feed wire to the fuse block. When I purchase my next Silverado in a few months, I guarantee I will make sure there is B+ power to the 7-pin connector.
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