heres what i wrote while i was sat in my car just after i had done it.
F**KING F**K YEAH!!!!!!!!!!!!!!!!!!!!!!!!
i have the dash working!!!!!!!!!!!!
I wrote down all the colors of the spare wires and then looked through the wiring diagrams for them. it was a blue/white wire which originally came out of the ECU and went to a junction box then it split, one to radio and one to fusebox. the one that went to the fusebox came out and went to the dash; so i thought this one might be the problem. Also when i was driving i could here the speed through the speakers..... remember it split at the junction box and one went to the radio.
I earthed it in the bay and it worked!
next problem - gears!
edited due to over excitement and stupid things wrote lol
so yeah, one of the many unused wires in the bay just needed to be earthed. i thought when i found it on the diagram, "where is it meant to go if i dont have the old ecu and thats where it used to go...."
just needed to sit down and go over the diagrams in depth