I'm currently swapping in a JDM B18C GSR engine with a P72 ECU into my 1995 integra that originally came with a B18B. I have almost everything done but now that I'm finishing up the wiring I ran into a problem with the IAB wiring. I'm using two different diagrams that both say one of the IAB wires goes into the pin location of A20. The problem is I already have a pin in the A20 location for the EVAP purge Solenoid. I'm not sure if I should splice into the existing wire or remove it and relocate it, and if so where? I don't want to start the car and have something wired wrong so any help would be greatly appreciated.
For reference these are the diagrams I'm using