DC5 head unit swap

405integra

RSX-S owner
Hi, I just bought a 2002 RSX Type S and previously had owned a S13. I unfortunately totaled that car when avoiding a head on accident from a person who was texting and driving and ended up in a ditch:/ I took out all that I could have from the car so I'm looking to put in my Sony DSX-S100 head unit in the DC5. I know I'll need a dash kit or whatever, but like the back of the head unit already has wiring done. I didn't cut any of the wires and removed the harness'. So my question is will I need a wiring harness and such?
 
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