I did a search and couldn't find help for my problem.

I just finished swapping in an OBD2 B18C1 GSR engine into my 92 DX HB. Everything is working like a charm except my TACH doesn't work anymore!

I just recently put in a cluster from an EX and the Tach was working great, after the swap TACH NO WORKY! I heard something about the OBD2 distrubitor wiring is different or something, Can someone HELP me rewire it so it can work with my new motor? I really don't wanna go for an aftermarket tach, especially since I just spend 100 bucks 4 days ago for the EX cluster! Thanks!