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Old 06-04-2012, 04:35 AM   #1
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Newmar Owners Club
Join Date: Apr 2012
Location: Diamondhead, MS
Posts: 661
Unhappy Trailer Brake Controller

I'm going to be towing a car trailer behind the MH. Now I've got to wire up the brake controller and have no idea what I'm getting myself in for. The MH is a 2005 Newmar Dutch Star, and I hooked up the trailer and everything (electrical) works fine. Any help for wiring the brake controller? It's a Tekonsha P3.
Charlie, Jackie
w/Lucy the Dog & Jack the Cat
2008 Newmar Mountain Aire 4529
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Old 06-04-2012, 06:05 AM   #2
Workhorse Chassis Owner
Join Date: Apr 2012
Location: SE Michigan
Posts: 50
The first thing you need to do is find out if you have a brake wire from the trailer electric plug in the back to the front. I just installed a trailer brake controller myself (2003 Coachmen Rendezvous), and while it was a pain, I eventually did find the single blue wire not connected to anything under the dash and used a multimeter and another length of wire to confirm it was the appropriate wire coming from the trailer connector. Once you have that wire, the rest is pretty simple - +12v, ground, and brake light switch wire which are all pretty simple to find under the dash.

The trailer connector brake wire is the hardest part.
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Old 06-04-2012, 10:38 AM   #3
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Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 24,023
Wiring up the controller is very straight foreward.. Just download the owner's manual, (or the install if different) basically it's just a few wires.

Worst case Tekonsha is about 12 miles South of Marhsall, off I-69 between the "old 27" exit and the M-60 exit... I was there just a few weeks ago.. Propane 2.69 on what used to be my dad's farm back when I was growing up.
Home is where I park it!
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Old 06-04-2012, 06:57 PM   #4
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Thor Owners Club
Join Date: Dec 2011
Location: Guyton, Georgia
Posts: 177
My 2012 already had a brake controller connector up under the dash. I just had to buy a patch harness to connect it to the brake controller (@ $10). I found the blue wire at the back of the RV taped in the harness about 3 ft back from the 4 pin trailer lights connector. I replaced the 4 pin with an RV type 7 pin that allows for my brake control and a charging wire for the break away system I put on.
2012 Thor A.C.E. 29.1
2010 Ford Escape 2012 Master Tow Dolly
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Old 06-07-2012, 03:06 PM   #5
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Location: Silver Springs, FL. USA
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The Tekonsha P3 is not at all hard to install - just follow the installation instructions. A call to Newmar should tell you whether you already have a brake controller power feed and/or brake controller output line in the coach. I suspect there may be one and you just have to find it.
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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