WILLSMAZDARX7

i would like to install the doors off of my 90 gxl onto my 86 na , and my question is about the wiring hook up does anyone know if the wiring harness on the 86 na is set up for power windows and it's just a matter of plug and go or is it a different harness and would require mods to work? i have alot of work to do on my rx7 and i'm just wondering if any out there knows thanks