I have a 97 GSR in my 95 civic with a OBD-1 P72. I wanted to know; I already switched the pin from A20 to A17. I was told that with an OBD2 motor you have to run a 12v source to the plug. I was wondering, where does A17 (formerly A20) run to? am I supposed to run a pin from A17 to the IAB plug? or do I run a 12v source to the IAB plug?