Take a pictureIanPreludeuk wrote:Anyone know what colour wires there meant to be and which pins on the main plugs so I can trace back? Any suggestions as really doing my head thankyou all
Below is a pic of a 4th gen setup (the O2 sensor connectors are slightly different) but it shows the location on the H22 engine loom. It is to the right of the oil filter.

http://www.ludegeneration.co.uk/post301775.html#p301775Merlin wrote: Connector on the loom
O2 sensor (bad pic)