Ok while there is some help to me on that thread its the green wire that goes to 46 on the 63 pin plug, dont really want to just tape the transponder to the box I want to use the key properly.
That post is regarding installing a ABF into a mk2 digi car and fitting a tiny bit of the loom to the mk2 digi loom. I am fitting the whole mk3 loom in regards to the engine ECU and immobilizer to a mk1.
i am keeping all my old fuse box and will run my old wires to the temp gauge and oil pressure switch, alt light etc on the new engine.
My old system will start and run the fuel pump ( the auto cut out dosent work and it has a standard relay in there anyway

I will try and correct this later)
i may later rewire my old loom to the plugs on the back of the mk 3 fuse box.....................but i doubt it very much.