Help replacing a wiring harness

brandad_1

So I've made a couple posts about how my Z's charging system has gone bad. I follow the FSM and diagnosed my car and concluded that the connection between the alternator and dash cluster is bad as the "charge warning light" doesn't illuminate. I checked continuity between the terminals the FSM told me to check (alternator connector to combination meter harness connector) and there is none. I even cut the wires connecting to the terminals I needed to check and tested continuity on the raw wire and no continuity either. So now im wondering which harness do I have to change exactly? Is it the dash or the engine wiring?