Dave I did one on our 420Sel a couple of years ago, you follow the cable towards the back of the engine it disappeares into the bell houseing. it has an access to get one bolt out but not the other. so I drilled a hole so I could get a 1/4 inch socket set into that bolt. now the hard part was trying to get that damn cable plug end out of its seat. I ended up breaking it into small pieces, the job took me two full days of chipping and pulling before it was cleaned out. Good luck JNT.