hello peeps i know people have seen questions on this before but i need help. I found a thread on fitting a tc switch on a vectra 1.9cdti. its says if you remove the blank cap and there is a blue plug, buy the switch fit it and your away. not in my case. got the blue plug, fitted switch but no go. ive heard that it can be enabled on tech 2 so i went to vx and they had ago. No clue at all. Can anyone help.