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Electric brake controller/brake light switch
  #1  
Old 11-03-2011, 10:17 PM
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Default Electric brake controller/brake light switch

Getting ready to install the electric brake contoller in my D40 & glanced at the brake pedal yesterday. I saw 2 switches & very small gauge wire.

Does anybody know the the colour of the switched power wire ie. the wire that becomes active when the pedal is depressed? (a link to a wiring diagram would probably have me soil my pants!)

How have you "spliced" into this power supply?

I will check with a test light anyway but it will save me a bit of time working out the correct switch & wire. I'm hoping that there is a spare terminal on the brake switch plug for the purpose.

Quite confident with the other aspects of the installation.

Little bit off topic (how is that possible when it's my topic???) I had a the towbar fitted yesterday & not by Nissan. Asked whether they use Scotch locks on the loom. Told that they plug into the loom. Great I thought no Scotch locks (= intermittent faults).

Get the car home & I take the insulation tape off the mess. Yeah they plug into the loom & then use Scotch locks to join onto the wires from the trailer socket. Oh & still use a Scotch lock to take earth from the number plate light (white wire in bottom of photo).

Nice job boys.

That's why I like to do things myself. That way it only gets done once. Hey and I'm just an amateur.

Happy with the fitting of tow bar though.

Thanks
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  #2  
Old 12-03-2011, 12:27 AM
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The manual shows the wire to be yellow. However, I've just looked at mine and they've spliced mine into the red wire.
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Old 12-03-2011, 05:46 AM
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Appreciated Tony,

At least that should narrow it down.

Dare I ask what they used to splice into the wire?
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  #4  
Old 12-03-2011, 06:27 AM
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It's under some insulation tape. I suspect, looking at it, that they took away the insulation, soldered the new wire in line, and wrapped it up.

It might not come apart, and electrically it will be good, but it's a little different to how auto electrics are usually done.
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  #5  
Old 12-03-2011, 07:26 AM
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Sure is different, no short cut.

"I like".

Thanks again.
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  #6  
Old 15-03-2011, 10:11 AM
nicksnavara nicksnavara is offline
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Hi Guys
may seem a silly answer but when i installed mine, i simply ran a cable all the way from the back of the trailer plug (break light connector obviously) back to the controller in the front. No Scotch locks just good honest crimp connectors with a drop of solder for extra protection .
Nick
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Old 16-03-2011, 11:44 AM
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G'day Nick,

There should be another wire from the brake light switch to the brake controller. When the brake pedal is pushed, power goes to the brake controller which in turn applies the caravan brakes.

At least that is the situation for the brake contollers that I have had.

I was a bit slow, only just noticed your post!
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  #8  
Old 11-07-2012, 08:12 AM
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G day Joe, I have just started to install a tekonsha brake control. I see there are 2 plunger switches on the brake pedal.Onthe larger switch there are 4 wires and i get power to the light green thick wire and also to the small dark green wire when the brake is on. Which onr did you go for the splice? D40 2010 auto king cab
regards Chris
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  #9  
Old 11-07-2012, 12:08 PM
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Jeno,

Mine is spliced to the yellow wire on the bottom switch. The top switch only has one wire on mine.
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  #10  
Old 12-07-2012, 12:24 AM
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Thanks mate, just checked again and yes the yellow is active when the brake is depressed.
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