ok there are two black plugs, one with a white band. they both go on the back of the ecu and they have the same entry, just one has more wires. i need to know which one plugs into the small black box.

thanks in advance, oh and i tried searching and i cant find my FSM.

 

right now i have the blk plug w/wht wire on the small silver box. when i switch that plug to the small black box the fan seems not to turn off when key off.