Hey Alfie,
Can you adjust the heading to,
"redarc brake controller in disco 3, please help (W.A Fremantle)"
This will mean that the WAulrovians can help.
He has connected the trailer variable voltage supply to the Fog lights. (Blue)
Obviously not checked it either as it will never work.
Also check the search forum for the Discovery 3 trailer brakes as there is a write up just for that model. It may pay to print out & take with you.
Landy Andy may be able to help also.
Cheers & Good luck mate.


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),he is a Land Rover dealer mechanic.They MUST be wired as he describes.
D4 2.7litre
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