Found a bit more time on this today. and of course a bit more rust to tackle. I don't remember this being there, but sure enough with the engine side trim over off, there it is.
Anyhow, i think i caught it in time, as it hasn't gone through at least.
i still have an ABS light on, so thought i best check all the sensors for continuity. They are seem to be good.
Rear connectors are under the seats rather than in the boot on 40s.
I did look at this before, but i don't remember how far i got with it. It may be the ABS ECU then, if the sensors check out.
I ordered some new welding stuff today, gloves and mask. So maybe i will get at it soon? Plus a new grinder!