89crx_dx_B18a1

okay so ya im getting a code 4 on my ecu and im having a tough time fixin it. i was wandering if i got the wiring harness from the integra the one from behind the dash and ran that along with all the wiring stuff if that would work on my 89 dx? if not then what can i do to fix my code 4. i was thinking about getting a new dizzy and plug and seeing if that works. but i also have another problem now. i tryed to get my car to start today and my car didnt click or anything like i had a bad connection with my battery. but the connections are tight.what do yall suppose went wrong.