Agree it is best to contact the van centre, or even any vw dealership, not likely to be specific to vans only. They do seem to be fairly generic vw connectors. For example check out "VW AUDI VAG 1J0 973 704 4 Pin MAP Electrical Sensor Connector Plug - 1J0973704" on ebay. Obviously, check how many pins your particular connector has. They can also be tricky to crimp together and assemble. I have just tried this on my fuel temperature sensor connector (2 pin) which is working for now but I'm waiting for delivery of a more expensive pre-wired connector so that I only have to join the cut conductors. I'll feel more confident with the repair then.