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Old 04-08-2012, 11:48 AM   #15
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Dumb question, do you put the switch between pin3 on the vehicle harness and pin 86 on the relay? Or between pin2 on the vehicle and pin 30 on the relay?
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Old 04-08-2012, 02:58 PM   #16
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Inline - between your instant 12 volt source (controlled by ignition key i what Zi used) and pin 30 of the relay.

The switch is not necessary, I thought it would be nice to deactivate the relay and brake controller when not in use...
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Old 02-16-2014, 11:47 PM   #17
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New question to an old thread but...

Is it possible that the computer of the Touareg (2010 tdi) is not sending the brake pedal signal to the brake controllerif the vehicule is not working?
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Old 02-17-2014, 09:02 AM   #18
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Don't quite understand the question...

When the vehicle is powered off, the switched 12 volts de-energizes the brake controller and the relay thus zero power is available to the trailer brakes when the tow vehicle is turned off.

When the tow vehicle is powered on (regardless of the engine running or not - but the Ignition Switch is in the "On" position), the switch inline allows the powering of the relay and the brake controller, my ideal was to use the switch and turn off power to the relay and brake controller if I'm not towing...

Does this help?
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Old 02-17-2014, 09:17 AM   #19
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Yes and no!

I did exactly like you with the 12vdc relay, but there is no signal coming from the wire for the brake switch...

I understand that when the brake pedal is not depressed I should see 3-4 vdc and 12 vdc when depressed, but I always have zero volt...

The brake controller is on then part of my wiring look good, but there is no signal from the brake...

Is it possible that I need to have the engine running to have at least 3-4 vdc at that wire??
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Old 02-18-2014, 08:50 PM   #20
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Hi Jeff, I think that my idea was lost in the translation...

I did more check tonight, I removed my connector to see if the car connector had the 3 volt and 12 volt depending of the brake pedal position. No power there... I also checked if there was a fuse related to this signal, no answer there...

Next step is to get the electrical schmetics to see from where this signal is coming and investigate why it is not working...
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Old 02-23-2014, 03:28 PM   #21
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I finally buyed a brake switch that can be installed where it is on other model, close to the brake pedal. I wired a 12 volt wire there and then to my brake controller. Et voilą!

Let's try it now...
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Old 03-02-2014, 09:25 PM   #22
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First run!

Brake are working: Check!

Light are working: Check!



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Old 03-04-2014, 08:05 PM   #23
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Congrats!!!
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Old 06-04-2014, 09:35 AM   #24
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I have just recreated the links to the pictures in this thread, thus all images are now properly displaying.

jfs
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