I am putting a '99 b16a2 swap into my '93 civic ex coupe. I am using an OBD1 P30 ecu, and a 97 gs-r wiring harness because it plugs into the wires on the chassis harness....but I am missing the connection for the knock sensor on chassis harness. I know all I need to do is extend the blue/red knock wire for it from the gs-r engine harness...but do I have to splice the line and run it to chassis harness and plug it into the ecu with a pin. do i hook it up too that with one i make myself, or is there a pin i can buy at a hardware store?