MY SWAP IS ALMOST DONE need help with THERMOSTAT

Ok im almost done with my b18 swap in my 89 civic DX. I have no idea which plug im supposed to hook up to the b18 thermostat. I cant even find the one on the old DX engine.

Can some one help me?

on the back of your stock block theres a metal sensor with a rubber boot with 2 connectors on it. thats is what goes on the thermostat. if you want you could just switch the sensor over form your stock block to the new block

Thanks man.