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Here is a diagram that might help also..

1704432427216.png


https://www.etrailer.com/faq-wiring.aspx

I got it from etrailer.com and since you're working on a camper the RV diagram might be it?

https://www.etrailer.com/question-252629.html

A little larger picture of the RV version.

1704431724570.png



Hope you can get it figured out as I know how frustrating it can be. And trying to fix old screwups just makes it more aggravating.
 
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I'm getting back into working on this camper now that it isn't freezing and dark when I get off work. I think I'm going to have to just rewire the trailer plug because now neither of the taillights are working. I don't think it's worth figuring out where the JANK wiring in there right now has a problem.

Does this make sense of where all the wires from the plug are supposed to go for a truck camper with a battery?

1706752000877.png

(look at them MS Paint skillz)

I'm pretty sure the battery charging system and the lights are supposed to be independent of each other...

So is it right the battery as well as both taillights eventually ground to the trailer plug/truck?
And the aux 12v/charging is only supposed to go to the battery, right?
And (unless the trailer manufacturer used them for something else) I shouldn't need to use the trailer brake blade?

And what gauge wire would you use? It is currently 14AWG for all the wires it looks like. Should I just use that as well or can I/should I use something else?
 
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I'm getting back into working on this camper now that it isn't freezing and dark when I get off work. I think I'm going to have to just rewire the trailer plug because now neither of the taillights are working. I don't think it's worth figuring out where the JANK wiring in there right now has a problem.

Does this make sense of where all the wires from the plug are supposed to go for a truck camper with a battery?

View attachment 496226
(look at them MS Paint skillz)

I'm pretty sure the battery charging system and the lights are supposed to be independent of each other...

So is it right the battery as well as both taillights eventually ground to the trailer plug/truck?
And the aux 12v/charging is only supposed to go to the battery, right?
And (unless the trailer manufacturer used them for something else) I shouldn't need to use the trailer brake blade?

And what gauge wire would you use? It is currently 14AWG for all the wires it looks like. Should I just use that as well or can I/should I use something else?

Your ground should be common to all things 12 volt on the camper. and yes it should feed through the the 7 blade plug to the truck.

There's probably already on on the truck but just in case
On the truck side of things, make sure you have a battery isolator between the trucks 12 volt and the 12 volt charge wire going to the plug. (In case you didn't know) The isolator will only allow the truck voltage system to be connected to and charge the camper when the truck is running.
 
Your ground should be common to all things 12 volt on the camper. and yes it should feed through the the 7 blade plug to the truck.
Okay cool. So every ground needs to be spliced together connected. Makes sense.

There's probably already on on the truck but just in case
On the truck side of things, make sure you have a battery isolator between the trucks 12 volt and the 12 volt charge wire going to the plug. (In case you didn't know) The isolator will only allow the truck voltage system to be connected to and charge the camper when the truck is running.
I think the truck already has this... being a 2500hd with a tow package? I have already taken the camper out when it was working and they RV battery died but the truck didn't, that would be evidence of an isolator?
 
Okay cool. So every ground needs to be spliced together connected. Makes sense.


I think the truck already has this... being a 2500hd with a tow package? I have already taken the camper out when it was working and they RV battery died but the truck didn't, that would be evidence of an isolator?
It may have one on it, they aren't hard to recognise. Usually under the hood close to one of the batteries... but, usually they don't come with the truck. I had to help my dad install one on his 1988 F-350, 1999 Ram 3500, his 2005 Ram 3500, and his 2010 Ram 3500 (all had the factory tow package).
 
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It may have one on it, they aren't hard to recognise. Usually under the hood close to one of the batteries... but, usually they don't come with the truck. I had to help my dad install one on his 1988 F-350, 1999 Ram 3500, his 2005 Ram 3500, and his 2010 Ram 3500 (all had the factory tow package).

Okayyy yeah I figured that'd be a given with the tow package. I'll check it out and make sure it has something like that, thanks man
 
Okayyy yeah I figured that'd be a given with the tow package. I'll check it out and make sure it has something like that, thanks man

If the majority of the vehicles sold with a tow package were actually towing RVs it might become a standard part with the tow package. The reality is RVs towing (slide in campers included) percentages are hardly a blip in the towing world...
 
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If the majority of the vehicles sold with a tow package were actually towing RVs it might become a standard part with the tow package. The reality is RVs towing (slide in campers included) percentages are hardly a blip in the towing world...

Ah okay... did not know that. Good to know
 
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If the majority of the vehicles sold with a tow package were actually towing RVs it might become a standard part with the tow package. The reality is RVs towing (slide in campers included) percentages are hardly a blip in the towing world...

So mr. trailer expert

14AWG is the way to go?
 
So mr. trailer expert

14AWG is the way to go?

It's more than heavy enough for all the lighting. It will easily handle up to 15 amps... The only thing different you might want to run is 10AWG or even 8AWG from the isolator to the charge wire for the camper battery/ies. Especially if you are going to be using the truck as the main source for charging the camper battery/ies.
 
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