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Old 09-11-2013, 07:58 AM   #11
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Join Date: Jun 2013
Location: Nebraska
Posts: 630
Originally Posted by rbneron View Post
Sorry; I stated relay instead of circuit breaker. Definitely needs overload protection. On my vehicle used circuit breakers for overload protection as opposed to fuses using this kit:

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires etrailer Accessories and Parts ETBC7

Man... I was all sorts of ready to correct ya! ... jk...

But yes to the OP what everyone has said has been great... Looking into the 7 pin on the back of the TV youre top right should be the +12 and the bottom left should be ground. Also, you may notice that these pins are larger than the others...


TV- 2015 Ram 2500 CCLB 6.7 Cummins 3.42 gears
Camper - 2015 Saber 322BHTS
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Old 09-11-2013, 09:19 AM   #12
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Join Date: Sep 2013
Location: Colorado
Posts: 258
All sorts of good info! Looks like I have an excuse to get out my multimeter this weekend.

I'm not really PLANNING on charging the battery in my TT from the car, I just want to know HOW to do it if really needed, and how NOT to do it by accident. I don't want a dead TV battery either.

To someone that asked, I did not wire in the 7-pin by hand. I bought a kit from Nissan that had it all wired for me, and I just plugged it in. Also, it did come with the towing package (upgraded cooling, hitch, etc), but that package only came with a 4-pin. The 7-pin was a dealer installed option, which is essentially what I added on, along with the relay to fire the brakes.

Thanks everyone!

Eric, Tara, and most of China
2013 Camping Nights: 2
2014 Camping nights: 31
TT 2014 Rockwood Roo 183
TV 2012 Nissan Armada
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Old 09-11-2013, 09:23 AM   #13
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While you got the multi meter out go ahead and leave it in the camper.
You'll thank me later.

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Old 09-11-2013, 11:31 AM   #14
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Originally Posted by f1100turbo View Post
While you got the multi meter out go ahead and leave it in the camper.
You'll thank me later.

X2. I have noticed the camper to home multimeter use ratio has not been anywhere near what I would have thought. (Honey, are these batteries dead? Honey, I just ripped the outlet out of the wall. Honey, the lights just went out...along with the microwave, electic heater, and blow you know why?)

ok, I didn't really need a meter for the last one but you get the point.

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charging, towing

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