I have a 94 corrado and the wiring for the obd 2 port is not connected there is the obd 2 port and the 2 connectors are there and then there is a lead with a 2 pin connector going to a black block and a few more plugins there but no othere wires so I can disconnect the obd port and its not wired to anything else in the car and the bently manual does not specify where this plugs in on the fuse pannel or whatnot and wire colors any help please I got the vag com wires today and cant use them