Hi all. I have a 2008 147 TS 2.0 Selespeed. I'm led to believe that the gearbox speed sensor is faulty as all sorts alarms and warnings are appearing. My mechanic advises error code P0720 is current. The question I have is how can I get to this sensor? I have read a number of threads and they talk about a brown cable connecting plug at the top of the engine. I cannot see this plug in my engine bay. Any ideas? I understand that the senor is mounted to the gearbox. Is it difficult to find and replace?