accidentprone

Hey guys new to the forum looking forward to contributing as much as I can. Any way ran into a problem where my doors will unlock all of them from the driver and passenger door, but when I try to lock them I get nothing. I have jumped the wires and I get nothing from both sides and i will not lock, do not even get a buzz like it is trying to lock the doors. I have checked all of the fuses as well as all of the wires everything looks great no problems that I can see. Is there a central relay somewhere that could be causing this. Also it is a 98.