I'm was looking at the OBD1 pinout diagram and i was looking at pinouts B3 and B4. I have an automatic tranny and i was wondring what will those be connected to? would those have to do with anything about the 2 solenoids thats on the tranny that can cause a error ecu code number 19? or is it D18 to correct ecu code number 19?

And my fan for my radiator is not turning on. Do i have to connect pinout A14 to the radiator fan?