Tracing wires.....
Thanks for the reply sideshow, have traced wires this am, one (brown) appears to go to earth and the other two (green and grey) go to the knock sensors. The thing that is throwing me is that these two wires appear to be like a coax cable like on a TV ariel, the internals go to ecu but the external covering goes to that plug which is a joiner. Is this for radio / ignition supression or am I way off ? Thanks in advance, Chris.