Hello,
You have a 2 Group Ecu with software of version 4.1 or better, which is a great thing, because Motec still lists software for that version 4 here:
http://www.motec.com/software/oldreleases/Also, I have the manual for a 3D, not a 2D, but I think they are very similar. I haven't seen the manual elsewhere on here, so PM me your email and I can send it.
The datasheets/ wiring diagrams can be found here for 2 group :
http://www.motec.com/downloads/downloaddatasheets/Looking for the DIY clock adapter for the PC that You have to use with a Motec 63003 cable also on the motec site.... can't find it now, but I have a PDF of this from Motec that I can send also.
I have a CEM3D V4.1 that I should have up and running with the DIY Clock adapter box up for sale soon
These are real good, simple workhorse computers and seems that they were used very extensively until someone lost or broke the adapter and the handheld tuner, then they were treated like misfit toys......