2013 Bighorn to 2015 F250 Wiring help

[gslabbert5119]

Can someone provide me with a wiring diagram for the trailer to truck wiring for a 7 pin adapter.


I am having trailer battery charging issues when my truck is connected to the trailer.
The rig charges the batteries just fine on shore power

I have checked the voltage at the truck end with the truck running and I am getting 14.3v to the 7 pin plug on the truck while it is running.

I opened the electrical panel on the trailer and found that the YELLOW wire was taped up on the trailer side, is this correct?

Vehicle: 2015 Ford F250
5er: 2013 Heartland Bighorn 3685RL

This is what the wiring looks like currently

Plug ---> Rig
Brown -> Red & Red -Black
Blue -> Blue
White -> White
Black ->Red & Orange Black
Red -> Red
Green -> Green
Yellow unused

Can someone verify

 

[cookie]

Yellow is unused. If you need an extra signal to your trailer you could use that.
Yellow would be the center pin.
Backup lights would be a good use of that wire.

Peace
Dave

 

[gslabbert5119]

Yellow is unused. If you need an extra signal to your trailer you could use that.
Yellow would be the center pin.
Backup lights would be a good use of that wire.

Peace
Dave

Thanks Dave, but I am confused,
in this diagram it shows Yellow to Yellow on pin 5
What color goes to the center pin (7)

Thanks for the help

 

[cookie]

Here is a better picture.

Peace
Dave

 

[Jesstruckn/Jesstalkn]

The color of the wires seem to be different on most of the RV's I've worked on

When I do my 7-way junction box and cord I have made them all uniform.

If you have truck power going to your junction box the next place to check is the curuit breaker in the battery compartment. There should be one by itself that goes straight to the batteries.

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[gslabbert5119]

Jesstalkn,
You speak about a 50 amp circuit breaker in the battery compartment.
Is that the big red on off switch with a white dial, for that is the only switch - circuit breaker that I can find in the battery compartment

TIA

 

[Jesstruckn/Jesstalkn]

Should be off to the side of the row of breakers like this

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[gslabbert5119]

Thanks Jerrod

Further testing shows that if I turn OFF the red on off switch the battery then starts to charge and I am getting 13:10v, but if I turn it on I can see the battery power drop.
Hmm,

I will check that circuit breaker, is there a reset button on it?

Thanks

 

[Jesstruckn/Jesstalkn]

No that breaker is auto reset.
The first breaker in that row has the manual reset with a little black button on the side.
If that breaker is tripped it will seperate the coach from the batteries.
So coach 12v would only work of invertor power if it's tripped.
When you turned your master shut off switch of I think your voltage drop because of a draw from things on in the RV maybe. :/

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[MP_CS]

Thanks Jerrod

Further testing shows that if I turn OFF the red on off switch the battery then starts to charge and I am getting 13:10v, but if I turn it on I can see the battery power drop.
Hmm,

I will check that circuit breaker, is there a reset button on it?

Thanks

So its working correctly when the switch is off? And when you turn the master switch on it stops working? Maybe the switch is just wired *** backwards

 

[gslabbert5119]

Never thought of that, but when i turn the master switch off it shuts everything off except the charging. Really pretty weird


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[CDN]

I always travel with my Trailer 12 v power on. Sounds like there is a wiring error on the switch. In the past I have used the aux contact or one for backup as a additional 12 volt lead fro charge use. Doubling up increases wire surface area creating less resistance and more charge current.

 

[danemayer]

If you see 13V with the switch one way and 0V with it the other way, I'd suggest you trace the cable from the negative post of the battery to where it's grounded and make sure you have a clean, tight ground connection.

 

[Jesstruckn/Jesstalkn]

Never thought of that, but when i turn the master switch off it shuts everything off except the charging. Really pretty weird


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If you have a test meter and a little bit of time you can call me and we can do some testing. My little brain gets confused when I try to read and keep up with all of these post on the forum.

My number
Jerrod
209 923 3207


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[gslabbert5119]

I should have some time on Tuesday and would appreciate the assistance.
I will be in Sacramento
Thanks


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[Jesstruckn/Jesstalkn]

Do you have the RV with you ?
We are in Jackson RV park all week.
Not to far from Sacramento

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[gslabbert5119]

Yes i do and will be driving down 99 on Thursday. Anywhere near you?

Do you have the RV with you ?
We are in Jackson RV park all week.
Not to far from Sacramento

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[Jesstruckn/Jesstalkn]

Yes i do and will be driving down 99 on Thursday. Anywhere near you?

Well if we were home you'd be going right by us.
However we are up in Jackson 7 more days
Maybe I can come to you on Wednesday

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[gslabbert5119]

Thanks Jess, however Wednesday is impossible for me I drove across country to do a safari presentation and that happens on Wednesday. I will then be leaving on Thursday to head back towards Florida. Maybe we can connect on Thursday, but do not put your plans on hold for me, you need your time as well

Gavin

Well if we were home you'd be going right by us.
However we are up in Jackson 7 more days
Maybe I can come to you on Wednesday

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[Jesstruckn/Jesstalkn]

I have no plans

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