First thing, Background....I am doing a jdm h22a swap on a 92 Si using the h23 harness and a p13 ECU. First thing, I know that all 92 civics, regardless of models were pre wired for VTEC. Is that the case for preludes? Next, on my h23a there is a Coolant sensor on both the intake and outgoing coolant connectors (or what ever you want to call them) but on the H22a, there is only one. First, what plug from the orginal harness needs to be plugged in? Next, the other plug is the same as the VTEC oil pressure sensor, can I just use that plug (I know I will have to extend it a bit) and then just move that plug on the pin out? Finally rusted cat studs suck.