92 lexus 02 sensors wire diagram question

Hi, i have 2 new in the box 2002 FORD Taurus precat 02's.
2 white wires
1 black
1 grey

i have a an old 92 Lexus sc 400 with 175K on the car and the pre cat 02's are bad.
2 black wires
1 white
1 blue.

I wish to solder in the new o2s that i have and keep the car goin'. I plan to pull the efi fuse, solder them up and see the check engine light go away. I know for a fact the pre cat o2's are the problem. A dealer diagnosed this. The resistance readings between the 2 black wires on the old 02's reads 6.5 ohms on the 200 scale.

the new in the box 02's for the taurs read (between the two white wires) read 3.5 using the same scale. I wish to solder /merge the two and would like to know which wires go with what. I believe the twin whites on the new 02's and the twin blacks on the old are the heater wires. I'd appreciate your help, can't find wire diagrams very easy online....maybe you could assist with a good website as well? sturgeonman@sbcglobal.net. thanks!