So I had a similar issue , I trapped part of the wire from the o2 sensor in the clutch cover , I bought a plug for the hole in exhaust and also came with a small black socket that plugs in to the connection , however the light still comes on as soon as you are in 5/6 gear or if you open her up in 2/3 , I learned to live with it however I have just got back from a 509km trip and the last 500m I got a hole in the exhaust so origanal going back on and I have patched up and cleaned the sensor so I won’t have that light anymore,