Starter

I have 98 Ford Ranger automatic I've changed the start ignition switch neutral safety switch starter interrupter relay in the fuse compartment in the motor and what's happening is I start my car in park and it you can hear the stars is engaged I go hit it and reverse it stops and I go ahead and neutral and comes back and gets engaged and drive it's not engaged and also I don't know if this has anything to do with it but I turn my key backwards and it starts and I'll start also when I hit it forward in the in the first position. I hope you can help me.