I suppose the two wires are a hot and ground in the 94. If so, then you just need to connect the two green wires in the 4 pin connector together for power, and the black one goes to the ground. The other one is for the seat belt buckle which you don't "need". If you are using the seat mounted buckle, you can wire it into the 94 seatbelt wiring if you want to.
Here is a pic of the jumpers I made for my seats. I used the round connectors on the seat side and spade ones on the car side, but I don't know what the 94 harness is like.