Hmm I think I may check the Redarc Brake installation instructions. I have a sneaky suspicion these wires may have been used to power my electric brakes.It is a difference on the US Spec car. Discussed briefly here.
US Spec car has 4 wires and other counties only three.
This may help explain the difference, in the US Owner's Manual F113 is for Amplifier/Trailer Brake Provision. In other countries it is the Air Compressor circuit. At present it is another INEOS mystery to unravel.
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Cheers
Steve
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