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Old 04-19-2014, 11:24 PM   #1
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Charging Batteries

I have a 2001 Fleetwood Toyhauler. This is my second Toyhauler. My old one would charge the batteries while my truck was running. Not so with this one.

Can I make this possible?

The issue is this... if you run the batteries down you can't start the generator. If I could charge the batteries with my truck, I could start the generator...

Does anyone have a solution?

Thankyou in advance.
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Old 04-20-2014, 02:07 AM   #2
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There is a pin in the factory 7 pin wiring on your truck that is a dedicated 12v source. You can look up diagrams easily online. All you need to do is run a wire from that pin on your trailers 7pin connector to the + on the batteries. I am very surprised it isnt prewired, You could have a blown fuse or corroded connection somewhere, you will know once you get the 7 pin plug apart if the wire is already there or not.
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Old 04-20-2014, 06:00 AM   #3
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The number 4 pin





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Old 04-30-2014, 11:35 PM   #4
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I spoke with another fleetwood owner and he stated his does not charge from the vehicle either. So unless we both have a failure of some sort I'm going to assume it wasn't wired that way. I am getting 12 volts from the # 4 blade on the vehicle connector.
I think I'll take the trailer connector apart run and a wire from the #4 blade to the battery.
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Old 05-01-2014, 08:32 AM   #5
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As they come from the factory, trucks are wired to provide power for charging. However, it is not connected.

On a Chevy, you need to add a fuse in the fuse panel, On a Ford, you need to add a fuse and a relay in the fuse panel. The relay is usually stored in the glove box. I am not sure about how Dodge does it.

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Old 05-01-2014, 08:51 PM   #6
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Quote:
Originally Posted by J Birder View Post
As they come from the factory, trucks are wired to provide power for charging. However, it is not connected.

On a Chevy, you need to add a fuse in the fuse panel, On a Ford, you need to add a fuse and a relay in the fuse panel. The relay is usually stored in the glove box. I am not sure about how Dodge does it.

Joel
My old truck - 2004 GMC and my new truck - 2006 Dodge - BOTH already were hot on pin #4, but both have/had towing packages factory installed, not dealer installed.

Check pin #4 at the truck plug to see if it is hot, if not, look for the fuse/ relay mentioned already. If it is, then.....

Check the trailer, follow the wire from the truck connector, it may go to some sort of junction box. I have a box on the back side of the front trailer frame cross member (right behind the battery box). In there, I have a hot wire that goes to charge my trailers battery. The wires for the lights (running, left turn, right turn - turn lights double as brake - and ground) all are connected to another loom that goes to the rear of the trailer for the lights, and the axle brake wire - with a ground, go to the axles from here.

Having a toy hauler, it has rear loading lights above the ramp door - I located the wire for reverse/backup lights, connected it to the loom going to the back, located it at the rear and installed a relay to the loading lights to become backup lights for my trailer. I know some newer trailers already have them, but mine didn't come with them. Wire loom on my trailer is the 7 wire loom used on the plug. All the wires are in there, but I needed to connect the wires together between the 2 looms in the junction box.

It would be nice if you have the wire already and just need a jumper to complete the circuit. IF the 7 wire loom doesn't have a junction box, it CAN be carefully opened and the hot wire located for this use.
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Old 05-03-2014, 07:28 AM   #7
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Sounds like you mean while parked, as one does not normally run them down traveling.

If that is the case, just use a set of jumper cables from the truck battery to the house batteries. Normally the gen will start up as soon as connected, then recharge with the gen.
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Old 05-19-2014, 04:14 PM   #8
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How did you make out? you did say the you had hot on your vehicle side, I find it unusual that the trailer would not be wired for it.
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Old 05-20-2014, 09:40 AM   #9
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The trailer is not wired for it. Don't know why-never seen it before. I'm going to run a "jumper" of sorts to the coach battery. Hopefully I can get it done this week as we a using it this weekend....
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