Seat belt safety switch

I have a 74 Duster and I just tore our the carpet. I am assuming that the wires on the floors are for the seat belt safety BS. Can I just cut the plug off and splice them together to eliminate them? There are 3 wires on the floor, 2 went to the seats and one 4 prong female plug on the passenger side and I'm not sure what the 4 prong was for.