Gauge cluster question.

So I’m installing a jdm cluster into a 92 s13, I was wondering if the plugs don’t match up, can I just wire up the harness that came with the jdm cluster?

Oh ya, I’ve got the digital cluster on.

I’ve got the jdm cluster in now, but nothing seems to work. Rpms, speedo and temp gauge don’t work. I checked the wiring by the ecu. What else can it be?