crxuso

I have a 99 dx hatch. I'm installing power windows and locks from 2000 si. I'm changing floor harness too all from same car. The thing is i went to add the three wires to the 2000 si floor harness for the rear window wiper but the 2000 si grey plug up front already has wires in the spots where the dx wires should go. What should i do? Another thing, when installing the window motors that they don't seat flush unless i torque the four bolts down. Not like the manual one. Is my door skin different then a power door skin?