4WS Honda Prelude. How do I lock the rear wheels permanently?

There are tie bars that replace the center section of the rear steering rack. But I warn you you are about to start taking things off of the car that were designed into it. Warning light is just one thing. And if the camber is not quite right and you are using a little to much front toe in to help with tire wear "road wander" rear wheel alignment is especally critical 4ws cars need just a touch of toe out to stabilize the rear end to keep it from "jumping around" but really wears inside of the rear tires because of the negative camber you got lowering. That car looks good low but at what cost? There are ways to make the 4ws work and make the car feel right again. But it is complicated adjustable camber bolts arms for the rear and front.