KA24DE ECU and Engine Harness compatibility issues

[Slide_Society]

I've been looking up various Engine Management and ECU tuning information and was wondering about KA24DE compatibility issues between wiring harnesses and ECU's.

I know this is a lot to be asking for, but has anyone compiled a list of the following?

-What combinations ['91-'98] are compatible [OBD/ECU/engine harness/body harness]. Or is it as simple as OBD1 for OBD1 and OBD2 for OBD2?-What parts don't swap over and are not compatible between the OBD1 and OBD2?-Do the signals to the body harness get d!ck up when you start swapping ECU's between the S13 and S14 KA24DE?

[Goldeneagle]

Keeping the idea of OBDx to OBDx is your best bet. I am unsure of the S14's but the S13 harnesses are different between the 89-90 models and the 91-94 models. Even more so is the connections for the tail light between the coupe and the hatch back. .