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Old 12-12-2009, 04:22 PM   #1
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Question where are the wires to hookup the brake controller?

Hello all you Newmar wizards.

Here's another one that I should probably be able to figure out myself by haven't been able to yet...

I have purchased a tow dolly w electric brakes. It hooks directly to the 7 pin connector out the back of the coach and all the lights and blinkers work fine.

The guy that sold me the dolly said I need to purchase a brake controller and install it under my dash, splice into the brake wiring and find the blue wire that will convey the brake signal back to the dolly.

This all seems totally logical except that i didn't see any particular wire or switch attached to the brake pedal and there are like... a thousand wires under the dashboard and I'm just not good enough to decipher which ones I want.

Any advice or experiences would be appreciated. I'm going to go get the Newmar owners manual and see if I can find what I need to know in there. The brake controller instructions were not very useful since they are so generic.

Thanks in advance,
Dave
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Old 12-12-2009, 06:46 PM   #2
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On both of my Dutch Stars the two wires were under the dash just to the left of the steering column. The wires are taped off. At the rear the wires were taped off near the plug so they need to be connected to the 7 pin round plug.
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Old 12-13-2009, 05:49 AM   #3
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thanks norm. will get under there today and look for them.

I wish the Newmar owners manual was more help. Info is too vague to be useful. Perhaps there's a service manual that would be more detailed.
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Old 12-14-2009, 09:16 PM   #4
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Update:

I found the wires WAY up in the rats nest of cabling above the steering column. Nice little labels on each wire and everything. Pays to use a flashlight and really, really get under there and just look around!
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Old 12-14-2009, 09:37 PM   #5
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Update:

I found the wires WAY up in the rats nest of cabling above the steering column. Nice little labels on each wire and everything. Pays to use a flashlight and really, really get under there and just look around!
Like looking for a needle in a haystack.

Glad you found them.
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Old 12-15-2009, 04:51 AM   #6
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Mine were VERY easy to find under the dash and nicely labled. I don't remember exactly where they were, but I believe I found them to the left of the steering column.

Yes, the flashlight is a big help.
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Old 12-20-2009, 06:27 AM   #7
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Can anyone tell me what year newmar started wiring for brakes? I have a 2000 mountain aire and i looked for hours under the dash and could not find the blue wire then i went to the rear and looked all over and found nothing also.then i opened up the wiring harness to the 7 pin round plug and found that it was just wired up for parking lights,turn signals,and of course brake lights.no other wires wired in or hanging around? I called newmar and i asked the person that answered the phone where the wires were at or if he knew if it was even wired when it was built.he told me that he did not know. I asked if he could hook me up with someone who would know and he said he did not know who to ask???? Dead end road with newmar. So i still wonder if they are there or were never wired in when it was built. Maybe someone will of ran into this and will be able to help me out with this . Thanks
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Old 12-20-2009, 10:54 AM   #8
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Can anyone tell me what year newmar started wiring for brakes? I have a 2000 mountain aire and i looked for hours under the dash and could not find the blue wire then i went to the rear and looked all over and found nothing also.then i opened up the wiring harness to the 7 pin round plug and found that it was just wired up for parking lights,turn signals,and of course brake lights.no other wires wired in or hanging around? I called newmar and i asked the person that answered the phone where the wires were at or if he knew if it was even wired when it was built.he told me that he did not know. I asked if he could hook me up with someone who would know and he said he did not know who to ask???? Dead end road with newmar. So i still wonder if they are there or were never wired in when it was built. Maybe someone will of ran into this and will be able to help me out with this . Thanks
I have a 2000 DSDP and had the same problem. I had to run a brake wire from the brake controller to the back 7 pin plug. The easiest place to get brake power is under the floor right beside the brake master cylinder (or whatever it is called on air brakes). To do this takes an assistant. Have someone apply the brake pedal after you have checked the wires to make sure there is no power going to the wires. Once you know which wires have no power, step on the pedal and re-check the wires. The one that lights up the tester is the brake feed for your brake controller. To get to the brake area, you need to crawl under the coach and sit up in the small space left of the brake area. Hope this helps.
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Old 12-20-2009, 10:58 AM   #9
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Well, your information is a start, i might be looking for something that is not there in my model in 2000. Thank you very much for your input
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Old 12-20-2009, 03:56 PM   #10
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Glad I'm not the only one with this problem. I have a 2004 KSDP and went so far as taking it to the factory for some service one of the things on my list was hook up the brake controller. After a day of service I was told everthing had been taken care of and specifically ask if the brake controler worked I was assured it was. I should have known better than to take someone's word. The end result was I ended up running my own wire from the controller to the 7 pin plug.
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Old 12-21-2009, 07:54 PM   #11
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Mission Accomplished

Quick update:

I spent an hour or maybe a little more one evening last week and got the brake controller installed. Wasn't bad at all except that I don't have a proper wire stripper and had to struggle to use my wire clippers to strip off the insulation of each wire. But it looks like everything is working as intended.

Sorry you other guys are having to run your own wires. Makes me appreciate the fact that mine were already brought to the front.

Hopefully I won't need to spend another hour upsidedown under my steering wheel anytime soon!
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