need suggestions on how to do wiring for a 4.0 H.O in a 1990 XJ

[ford boy]

does anyone know what to do for a wiring harness wise for putting a 4.0 H.O in where there used to be a 4.0 cause the wiring harness i got was not fitting any of the connections on the accessories that i have and at this point of time im kind of stuck so if anyone has any suggestions or would happen to have the parts that i need that would be great