89 and 90 harness differences

is a 89 civic si main harness compatible with a 90 si engine, and rear harness. also is it the same clips for the dash and interior fuse box

no. what are you doing that requires you to need this information?

the engine harness is the same, that's it.

so the fuel pump harness wont clip to the main harness? im doing a b16 swap in a 90 dx hatch, so i switched the whole 90 dx harness for the 90 si harness, but my main si harness is messed, so the only other harness that i can get is an 89 si, the whole reason why my 90 si harness is messed is cause it wont send power to my fuel pump, ive pin pointed the harness because i checked everything else twice