ok so< i somehow blew up my dx ecu. was gonna wait abit to do the head harness and ecu swap but now is the time.

so as far as i can understand its pretty much plug and play other than a re flash. and the secondary o2 sensor wiring.
im not entirely sure how to wire in the secondary. i have the pin out list for the ecu, but before i go ahead and start splicing i was wondering if anyone has encountered this before. and if they could give me a bit of a tutorial on doing it.

can i just use the plug from my dx harness?
do i cut the wire off the ecu and wire the sensor in or just splice?
and which power and ground pins for the heater for the secondary?

thanks in advance