Got a Disco 2 and i'm replacing the front abs senser, afaik the new sensers join straight into the ecu yellow plug terminals 1&2 and 4&5 [green wires]

Is this correct? I've done a continuity check between the connections on the ecu and the cable above the front arch where the senser would normally plug into and i have got nothing. Which is making my think my info of the pin configurement is wrong or theres a break in the wiring and it's not a duff sensor afterall.

Any know? - i can't find nothing of use on the 'net.