2nd o2 sensor on 99 4 door????

[dok]

ok i gat this 99 civic 4 door lx the motor gave in so i did a b16a2 swap my lx motor had both o2 sensors on the exhaust manifold and the b16a2 has one on the header and another on the cat but like a ass i used the si wire harness i thought plug and play the 2nd o2 senor goes up the floor bord by the shift linkage the only problem i am have is finding the plug for i rip my carpet took my seats out no plug please help

 

[dok]

i gat the diagram i just don't know what goes were what dose heat signal and all that mean

 

[dok]

no one come on guys