Im using a obd-1 p72 ecu and I need to know which wire is for the main radiator cooling fan? Is it A12 because A12 just says coolant temp switch?

 

bump I must know

 

theres the ect sensor on the thermostat housing that is basically a temperature activated switch. the green wire coming off that goes up to the under hood fuse box to activate the fan relay built in to the bottom of the fuse box. and the fan is directly connected to the relay. from what ive read all that pin a12 does is artificially raise the rpm of the motor when the radiator fan is going to kick in so that you don't notice that slight bog in the engine from the increased amp draw on the alternator. so far though i can't figure out where a12 is supposed to go to. if you get that figured out please let me know.