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Old 07-07-2012, 07:43 PM   #1
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Brake Controller Wiring

I'm wiring up a brake controller on my 1995 Thor Residency (Ford chasis). I've been up under the dash (as best I could anyway) and cannot locate the brake light switch. Does anyone know any other place I can access this circuit to wire in the controller?
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Old 07-08-2012, 04:43 AM   #2
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The brake wire also goes to the turn switch. The brake switch should be above and behind the padal arm. There might be a grey five wire plug under the dash just like the ford pickups have. If you have the grey plug, you can get the matching plug from any ford dealer parts dept.
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Old 07-08-2012, 09:27 AM   #3
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Thanks Dave, I'll get my meter out and see if I can trace it down on the turn signal assembly. The brake switch itself is apparently way above the pedal. I twisted myself up under the dash and the pedal arm goes up in there but I couldn't see the switch.
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Old 07-08-2012, 10:26 AM   #4
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It may be easier to get to the wire 511, a light green at C201 as it plugs into the Shift Lock Actuator.
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Old 07-08-2012, 10:35 AM   #5
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Quote:
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It may be easier to get to the wire 511, a light green at C201 as it plugs into the Shift Lock Actuator.
I'll find that on the steering column?
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Old 07-08-2012, 11:19 AM   #6
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I'll find that on the steering column?
Yes, diagram of its loaction below:


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Old 07-08-2012, 12:27 PM   #7
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On the master cylinder.
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Old 07-08-2012, 12:51 PM   #8
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On the master cylinder.
What is?
Not the wire he is looking for or the BOO switch.



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Old 07-08-2012, 03:02 PM   #9
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Quote:
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Yes, diagram of its loaction below:


/
Thanks Bill! That diagram is very helpful. Looking at it, I'm hopeful if I remove the curved surround of the dash I'll then have access to the brake switch. I was hoping my coach was pre-wired for the controller; I did find a blue wire in the harness going to the trailer lights but myself and a mechanic have dug around all under the dash and couldn't find a blue wire or harness for the controller anywhere. What started out as a simple project has turned into a major pain in the rear!
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Old 07-08-2012, 08:09 PM   #10
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Thanks everyone for the tips! I unscrewed the top curved section around the dash, pulled it up. Found a bundle of wires that were actually labeled. Skinned some insulation back on the wire labeled brake lights, checked it with my meter and had voltage on it when I pressed the brake pedal. Used a splicing connector and ran my wire.
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Old 07-09-2012, 06:45 AM   #11
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Glade you found the wire.
Did you take any photos of the wiring?
If so can you post them or email them to me.
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Old 07-09-2012, 06:47 AM   #12
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Glade you found the wire.
Did you take any photos of the wiring?
If so can you post them or email them to me.
Didn't take any Bill, but I'll be glad to.....will be this weekend before I get a chance to do it.
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Old 07-11-2012, 04:46 AM   #13
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rocknrun has a nice installation diagram, It looks like connector c154 may be the plug for your trailor brake controller? If you can see it, it should have five wires black, red, blue, white and green if my memory serves me
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Old 07-11-2012, 06:04 AM   #14
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rocknrun has a nice installation diagram, It looks like connector c154 may be the plug for your trailor brake controller? If you can see it, it should have five wires black, red, blue, white and green if my memory serves me
I think that C154 is miss labeled in that diagram above. It is C212 Accessory Feed and rockrun has already found the Accessory Feed wiring that is labeled and has hooked on to the right wire.

Diagram of Accessory Feed:

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