[widu13]

Hello, the common rail connector is below the rubber pipe and just in front of the dip stick funnel.

It's a snap fit plug which is easier to get at if you take off the 2 bolts holding the dip stick pipe to the engine block, don't worry it's only to come away a few centimetres.

Use a flat blade screw driver to open the push fit plug. your 'T' piece from the from the tuning box basically splices in between the 2 pieces of the plug you take apart.

Yep that's the location. It's literally a 2 min job after getting the hang of opening the plugs. I just unclip the airhose in front of it; no tools needed.